EX:boom slime will get up close, and explode with enemies in range, dealing high damage both to enemies within range, and to the slime itself. If these slimes are upgraded correctly, they could become effective suicide bombers.
Now THAT is a good slime description for a battle game!
(I feel like tabby slime should do something other than healing, maybe debuff or distract?)
A Boss Would Be Cool. The Tarr Boss Could Only Be Hurt By Water. And Moves Around, And Can't Be Picked Up, Similar To A Gordo. It Would Summon Tar From The Floor And Send Tarrs To Attack You. When You Defeat It, You Get A Tarr Relic, One Of The Boss Relics.
probably summon the endgame story boss, summon a friendly tarr, look cool, all sorts of things
Also, here are more ideas:
I think that if a Tarr defeats an opponent slime, it summons another Tarr, Glitch slimes can go really fast, and have a fifty percent chance to split into 2 more upon engaging in battle, Crystal slimes are weaker than rock slimes, but can leave spikes upon acting or being defeated, there can be pure saber slimes (we hide fromm thoz silly hoominz) which can be a distracc and attacc, the quicksilver slimes get boosted attack from electricity, puddle slimes lose health slowly over time being out of water. A honey slime can heal and distract. Boom slimes don't faint after exploding, they do damage( and stun for a long period of time) to themself, A new possible boss would be ROBO-DUCK (or D.U.C.K) which is just a slime in a giant duck mech. you could have side quests, one of which is where you find Viktor's Fiddle (being held hostage by a boom slime) and return it, another of which is where you help a Mad Scientist get the Slimeulation running again (without harming the world), due to it being shut off by Viktor to avoid environment problems, and yet another where you help a gold slime escape from Mochi's now abandoned manor.