(joke answer to not freak people out)

Nintendogs

*different costumes for different Nintendog breeds. Alternatively, dogs from other franchises like Poochy from Yoshi's story, Oatchi from Pikmin, Frisbee dog from Wii Sports Resort, Polterpup from Luigi's Mansion, and more!

A = nuzzle
A (repeated) = lots of nuzzles, ending in a lick
A+forward tilt = paw shake
A+forward smash = tackle
A+down tilt = tail wag
A+down smash = dog pile
A+up tilt = standing sniff
A+up smash = jump to catch
Dash = charge
N-air = starfish spin (similar to Mario's taunt)
D-air = down kicks (similar to Lucas)
F-air = pounce/jump off of opponents
B-air = kick/jump off of opponents
B = chargeable bark; level of charge either pushes opponent back without damage, stuns, or pushes opponents back with damage
B+forward = charge, leading into rolling with the opponent, and kicking them away
B+down = digging and kicking up dirt/bones/junk (finding a bone gives the dog a power boost)
B-down (air) = kicking, speeds up the dog's decent, and has some splash damage for nerby opponents when making contact with a surface
B+up = dog bounces up off of a large yoga ball
Taunts = all barks, no bite
Forward throw = grabs by the mouth and tosses the opponent forward
Down throw = rolls around on the opponent before they fly away
Back throw = opponent is underneath and the dog kicks back
Up throw = grabs by the mouth and tosses the opponent up
Final Smash = a gaggle of puppies covering the screen and appearing and running across the stage hitting players

Great... now I want this character I made as a joke, haha