i can maybe give knuckles wallclimbing
like he can in some sonic games and a glide like pit/SMBZ mario´s new cape up-B/metaknigth
Nice MDK, then make climb limited and not to long lasting because he is the most powerfull sonic character (in strenght) and the he will have 4 recovery moves which is climb, Glide, up b and side b. But i can make so you can't do up b after side b/glide and the opposite. So he won't be OP