I mostly plan on a few guest characters somewhere in the future.

Currently I have 2 Bomberman and Mario

I dont mind which should be choses for a first guest character. Heres a few sprites i plan to use for Bomberman.

Mario's just gonna be quite obvious.

The Classic Hop and Dive. (Amy Rose)

(coming some time soon or something.) The 1st Sonic Battle Redux arcade Run: Sonic.

(Not finalized yet but its a resemblance.) I have decided to make it 3 Buttoned. Though the Basic attacks mapped A,B and C buttons will also be mapped to X,Y and Z

I'm taking you down like its 1998/1999!

2/3 of them are references to

Sonic's Concept and is also a Skin in Sonic Superstars Cream's Debut (Though inconsistent looks)

A former 90s rival's (A red capped plumber guy) recent 3D platformer since 2017

(Advance 1) Angel Island Zone.

Originally for Infinite Battle Now retooled

Act Music as Rounds? (may not apply to every stage)

A returning move from Infinite Battle

but a bit more on Sonic 06's Green Gem.

Yoshi and Birdo cosplaying as Ichigo Momomiya