Playable Characters:

@Kholey69 - Koopa

@XvonLol - Goomba

@DaRealFlexSentralLol - Shy Guy

Supporting Characters:

@Da_Treino - Bowser

@DaRealMemeCentralLol , @Sel499 /@Poley64, @YvonXD, SMGOo942, @TaeYai , @NonsenseNH , @Emmalar , @ice_god - Koopalings

@dogtroid - Fighter Fly

Upcoming playable Characters:

@LaeNai - Piranha Plant

Bosses:

In AKR 1:

@ZaulBarraca - Mario

@Noob_Gaming - Wario

@Coolrun1613 - Waluigi

@tooyo1234 - Peach

@WisdomTheFunkyBoi - Luigi

In AKR 2:

@Braixen-official - Popmo/Shroomario

@DaylenTvGaming - Saladro/The Clossosal Muertoshroom

Boixen - Umbreltar/Fungumbrella

@Boris-The-Wolf-Bear - Burgerstein/The Great Sir Lord Willenby Huxley Shroomingmeyer III, Esquire, P.H.D. and Philanthropist Extraordinaire

@Darkness_Wolf - Flying Spaghetti Monster/Ribbup

@ZaulBarraca - Mario/Monstario/Final Confrontation Mario

Other:

Various GJ users - Yoshis, Toads, Baby Mario, Baby Luigi, Baby Wario, Baby Waluigi, Thwomps and other enemies in AKR 1 and 2