Game-Based Enemies

[Polyedit2000]

Let's focus on enemies and bosses this time and translate them into RP terms. Here's Mario Bros as an example:

Goomba - Wild animals that attack.

Koopa Troopa - The soldiers of the Bad Guy that you have to fight on foot or mounted. You will notice that the red ones tend to patrol the area. All of them have a weapon you can take from their corpses.

Piranha Plants - Wild traps with thorns that damage you. You may notice that the ones that can also spit at you tend to angle their heads.

Cheep Cheep - Pickpockets that tend to hit and run. While you can attack them back with good time, it's better to ignore them. In water levels where the movement mechanic is different, they will use different tactics.

Lakitu and Spinies - These go hand-in-hand, with the summon bringing thorny creatures. The longer you let the summoner live, the more trouble you'll be in.

Hammer Bro - The Bad Guy's elites that act as smaller boss encounters in the early adventures. They tend to be better at combat but can be defeated with other tactics.

Bowser - The Bad Guy himself. He may face you many times and has an escape plan, though his overconfidence shows as he may choose to fight you in an area with a flaw such as a rope bridge. In a straight battle, he has a lot of abilities and can take a lot of hits.

[Flashlight237]

Okay... I got one.

Pizza Tower

Cheese Slime: Passive wild animal and EXP fodder

Fork Knight: That one annoying enemy that always gets ya no matter how skilled you are, goshdangit!!

Vigilante: Danmaku, baby!

Pizza Face: Giant floating entity that wants to eat you for some reason.

Pizza Head: Goofy twist villain and that one final boss you basically have to go Super Saiyan against in order to defeat. Come to think of it, Sonic and Kirby final bosses follow a similar memo.

[Polyedit2000]

Perhaps  another example, this time using Fight! Olyn Island (a simpler version of Hearthstone Battlegrounds).

-Plain: A battlecry-focused tribe with some piece that grow stronger by playing more units.  In the beginning, you have a pig that grows stronger with each Plain and a hyena that summons another hyena.  In the middle, you can decide to generate more power with more battlecries or by a dance of playing and trading.  At the end game, not only do you have a lion that makes a potential Plain minion Golden and a mandrill that can trigger a battlecry before battle, but you also gain a Fuse minion that can be added to a Plain for an insta-kill.  Generally, though, the minions in battle aim to have big stats early on.

-Polar: A tribe that's focused on shields and battlecries.  One such early minion will deal damage based on how many Polar minions you have.  Later, some Polar minions can grow stronger passively or even in battle.  At the end game, you have a penguin king that gives stats for each battlecry and a yeti that gives everyone shields.  Players would have to get through these defenses in order to defeat them.

-Swamp: A tribe that's focused on trading and getting the right pieces.  The starters adds another minion to hand when sold and a minion that adds a key minion on certain turns.  As you progress deeper, you get minions that reward you for adding Swamp creatures and can increase the stats of buyable minions.  In the end game, one minion gives stats by trading and another adds a minion to your hand.  With a setup, a Swamp build can improve a dedicated attacker of another tribe.

-Jungle: A tribe that grows strong at the cost of their minions and health.  The starters shows this off with a minion that gets stronger for each minion played as well as one that summons more on death.  Midway, you can switch to a different growth option or support your rising army.  The end game pays off with the ultimate summoner and a minion that increases everyone's stats when anyone dies.  Essentially, fighting an endless army allows their minions to pick you off and grow stronger.

-Lava: A tribe that rewards minions dying.  The early stage starts with a minion that buffs summoned minions as well as a minion that reivives.  Later, aside from one that gives gold for multiple deaths, minions will focus more on dealing damage before or after their deaths or getting stronger when new minions come in.  At the end, you're looking at a minion that increases other sources of damage or one that transforms into a strong bazooka when enough minions die.  While they may not have the greatest growth, they can blow up the competition with the right set up.

-Lair: A tribe of bugs that grow stronger.  This shows when the first duo adds stats to their replacement or add stats from other minions.  In the middle of the game, you have minions that are relentless attackers and some that will passively improve stats as a whole.  Though their end game really gets crazy when you have a queen that improves everyone for each attack and a pseudo-bug that copies the gains of its brethren.  If you're not facing a big wall, you're likely to face an increasing wall during battle, though they may not have other allies.

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Part two, tribal synergy.  Some minions can help minions of other tribes.  Here's some examples:

Plain + Polar: The penguin king is more likely to have a stronger army if the Plains contribute the majority of their battlecries, even more so when their mandrill priest and another Plain stay behind to give a last-minute boost.

Lava + Polar/Jungle: Their zombie goat damage increaser is a dangerous foe as it increases other source of damage, notably deathrattles but also including Jungle snipers and the Polar ambushers/counter attackers.  For the Lava/Jungle collab, a Lava crab can also gain power even from its jungle buddies as it gets stronger from their deaths.

Polar + Lair:  There is a Polar panther that retains gains from combat so it could keep a shield and work with its Polar shield/stat trader, but a late game Lair's queen can also give these stats to the panther too when her army attacks.  A famed warrior on loan.

Swamp + Lair:  Not directly, but if you play the Swamps that increase the stats of minions in the store, you can also play Lairs that eat the stats of minions in the store.  Kinda like tribute of the strongest to strengthen the army.

[Flashlight237]

Perhaps another entity...

Pokemon

Missingno: Glitchy entity that probably shouldn't exist in the world.

Zubat: Enemies that appear nonstop even when you really don't want them to. They probably make up a third of the world's enemy population or something.

Magikarp: A seemingly weak and pathetic enemy that would turn into a very powerful form.

Gardevoir: That one enemy that had to be all fanservice-y. Anyone got the restraints?

Plusle and Minun: An example of a synergy tailored specifically towards enemies with a strong connection to one another. Location synergies are ignored.

Arceus: An entity capable of using every element in the book and then some. This being serves as the creator deity and the overarching god of the world we live in. All that exists comes from him.

Mudsdale: HORSE

Ogerpon: An enemy that acts out of self-defense rather than malevolence. In reality, it's actually pretty adorable and could use a hug. You would learn that the reason Ogerpon acted the way it did was because it thought you were helping a trio of dicks out.

Also, for the fun of it...

Nemona: A stalker. Also horny.

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Five Nights at Freddy's

Every animatronic with the sole exception of Glamrock Freddy: I'm literally writing this because of the movie. These animatronics are hellbent on jumpscaring you and are more than happy to bite your head off and have it for dinner. If they don't get to do that, they'll stuff you into an animatronic suit, which is as comfortable as the finishing blow of a SAW trap and will wind up making you the victim of two-player Seppuku.

Springtrap: Literally William Afton, aka the Purple Guy. You really wanna know what his deal is?

[Polyedit2000]

This topic is less about re-listing entries and more of translating their mechanics into roleplaying terms.  Let me list a few Hearthstone legendaries as an example:

Reska, the Pit Lord (Badlands)
She costs 20 mana, but this cost drops for each minion that dies in the game.  In addition, her deathrattle will take control of a random enemy.  What I'm thinking is that you'd be playing a stealth portion and if you end up killing a certain number of enemies, she'll be alerted and show up.  Now, Reska herself can be taken down in a few hits, but by doing so, her soul will hide in one party member and she'll be ready to wreck havoc if the other party members don't realize this plot.

Kingpin Pud (Badlands)
Pud's battlecry is to resurrect his Ogre-Gang and give them Windfury.  It should be important to note that the Ogre-Gang minions in this expansion have 50% to do a diferent effect.  What I'm thinking is a scenario where you would fight members of this gang and the Ogres have these half-effects but are just slightly stronger than a regular enemy.  When you see the whole gang at their hideout, Pud comes out and starts yelling at his gang, "encouraging" them to attack twice per turn meaning they may proc their abilities twice.

Yogg-Saron, Unleashed (Titans) (Rework)
The rework would make his cost constant and instead cast two random spells each time he activates his ability.  So pretty much whenever he casts a spell, he will also roll two wild magic effects.  In addition, he has three legendary actions based on his "Titan" abilities that he casts once per fight.  He can take control of one party member or cast mass confusion, both proccing his wild magic.  He can also summon 1d8 tentacles, potentially rolling 10 wild magics in total!

Mister Mukla (Festival)
Mukla has always been about giving out bananas but this version will fill your hands with bananas.  The idea is that the fight will unleash an avalanche of bananas, adding a check that could cause players to grab a banana instead of their preferred equipment or item.

Defense Attorney Nathanos (Castle Nathria)
His battlecry involves triggering and gaining a dead ally's deathrattle.  Considering his almost undead nature, he could be a hunter of people that has been tracking the party for a while, infusing himself with the spirit of the strongest animal that the party has slain, allowing him to to use that creature's abilities in addition to his own.

[Flashlight237]

I mean, I kinda already been doing what you said, so uhh...

Oh, one more Pizza Tower bit.

Stupid Rat: A literal living obstacle that only serves to get in the way of players. There are also other living obstacles like them, including Thwomps, but this is as basic as living obstacles get. You're gonna have to figure out how to move them out of the way.

[Polyedit2000]

Going through the Badlands expansion preview to explain any minions I see:

Bounty Wrangler- Quickdraw or Combo: Get a Coin.
Just one of many gals willing to get fortune when they see your face. They'll be the first to use their bonus action regardless of who goes first and they have another bonus action when helping out one of their allies.

Bovine Skeleton- Deathrattle: If this has 4 or more Attack, summon a Bovine Skeleton (starts with 3 Attack).
The will of the stampede is strong in this one. Fighting it will only make its bones come back together. The main way to stop this bovine is to also stop the one that is empowering it.

Antique Flinger: Battlecry: If you Excavated twice, destroy an enemy minion.
This baddie isn't afraid to destroy a priceless artifact with your face if the alternative is his life. In a place that has a moderate amount of treasure, he can grab one and toss it at you (breaking or activating the artifact).

Gunslinger Kurtrus- Battlecry: If your deck has no dupes, fire 6 random 2-damage shots at minions in the enemy's hand.
This guy is not about fair play. Before the battle even begins, he will shoot at the party. If you want to add more flavor, he can have legendary abilities based on the Barrens/Stormwind expansions: first, he can shot twice at an enemy and gain evasion if that enemy is far from any ally. Second, he can rally his allies so that they can move quicker. And third, he can summon two demons to help him.

Midnight Wolf- Rush. Outcast: Summon a copy of this.
A wolf that howls at night. If you find it alone, its partner is waiting in ambush.

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Also, some Shadows Over Loathing gatormen. They are not smart, but they are violent if they need to be and you usually find them in a violent mood.

Rot-Tooth: This guy only has one attack, a belch that reduces any caster's ability to focus on spells. In fact, this guy is actually rotten all over as anyone choosing to strike him up close will get some poisonous sludge over them.

Weed-Lord: As the name applies, this is a nature-user. He can conjure a thorny whip or entangle everyone in weeds.

Scream-Mouth: This guy will use their mouths for one or two things. You might not even know its name with it tries to bite you, but it will scream (for victory or anger?), and while this scream encourages its fellows to be more vicious, it might frighten your party. The fact that it cycles between biting and screaming seems to suggest that it has needs.

Rage-Jerk: This guy only has one attack and it's just hitting people, but if it gets hit, it gets angrier and hits harder.

Mire-Chef: This guy is clearly the healer of the pack by providing "food". It seems to know which of its allies is the weakest and will toss them a pasty. It also knows when there are no more gators to feed as it will use toss its pasties to defend itself. Don't try to eat these pasties since they're definitely not safe for human consumption. Don't.

Mush-Muncher: This gal is more focused on eating the mushrooms she found rather than help the fight, but they are mystical mushrooms. The mushrooms have one of four effects: It heals her, it poison her, it give her so much gas that the party gets affected by it, and it can make her stronger.