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

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

That Hover Move.

It's like the OG game but less stiff.

Silver (With A Counter move with a cost of Power) and Metal Sonic

Despite being Water (Or Mutated Chao) slime sounds

(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

Giving the character's Icons some polish.

(Will be in the next update)

(Advance 1) Angel Island Zone.

Originally for Infinite Battle Now retooled

The "Big Green Man" (Guest) teaser.

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