firewolf suggestions:

cinderpup/cinderfang/cinderwolf

its a bit generic but simple enough and self explanatory as a series of evolutions

burnito/toastie/hotdog

cute food related series for comic effect - dudes always hungry....or maybe has domestic abilities like turning ingredients in to food

molokub/moloruf/molotuff

molotov themed series. kub like wolf cub, ruf as in woof and tuff as in tough, coz he's the bigboy!

cublit(puplit)/lithound/litwolf

I mean...need I say more.....these dogs are lit

grass racoon suggestions:

Raquillo(Quillo)/Racceen/Racanopy

quills as in sharp grass, -een as in green, canopy as in the tops of trees

Lawnacoo/Faunacoo/Folicoo

Lawn as in mown grass, fauna as in plantlife and foliage as in leaf matter

Acorno/Aconoor/Anoocar(Anuka)

Anagram of raccoon, Acorn vibes, racoon spelt backwards

Camorac/Bushracca/Wilderac

camoflage raccoon, ambush/bushwhacka racoon, wilderness bandit themes

water whale suggestions:

Deepo/Deepool/Seahulk

Depth theme, water pool, sea + hulking size

Slowlo/Slowflow/Slamoshun

Slow theme, low down, water flow, slow motion, slam attack, slow ocean. you get the gist

Undiva/Undanort/Sunkenort

under/diver, nautical wordplay, sunken nautilus

Towunder/Tidemaker/Daonunder

Undertoe wordplay (also Wonder), Tidal shifter, wavemaker, Dao (as in Decentralised Autonomous Organisation) under as in submerged and a play on Down Under

Electric Rabbit suggestions:

Harazer/Harestrike/Harestorm

Hare instead of rabbit, Hair Raiser (as in when static shock stands your hair on end - also sounds like Eraser, which is kind of cool), Wordplay on AirStrike, plus lightening strikes, Storm as in lightning storm

Zappit/Zigzap/Zigarabbit

Zap+rabbit (Zaprabbit works too, or Zingrabbit (for Holozing)) wordplay on ZigZag, wordplay on Zigurrat (to build up high) and like Megabit or Gigabit -ZIGARABBIT. I suppose you could have Gigarabbit, that would be kind of funny)

Raybun

just stick some Rayban shades on him for extra cool. Also sounds like Ray gun. but its a bunny.....

Elektraleap/ Elektravault/Shockjumper

theme of jumping, leaping, Vaulting (also like electric volts), shock as in electric shock

Kaboing/Buzingra/Rababoom

cartoony comic explosive theme, wordplay on Kaboom (except it goes boing), Bunny + Zing = Buzing + Rabbit = Buzingra (like Bazinga, play on a catchphrase from big bang theory to celebrate a win)

Flashrabbit/Arclite/Thunderjumper

miscellaneous selection, Flash like a flashbang grenade, Arc like jumping electricity, lite as in light, thunder because presumably lightning attacks are pretty loud

I don't need an AI when it comes to wordplay. These are all mine : )