If he was a character I'd give him:
Super Strength
Acrobatics
Spin Dash (Holding Down B or O)
Chaos Snap (Tapping B or O)
Lock on (Chaos Spear, can be used in the air)
Homing Attack (The Spin Attack version)
Super Speed (He'd be the second fastest in the game)
Able to transform (Super Shadow)
The reason he was cut from being a character is probably because SEGA is super touchy with Shadow according to the creator of Sonic Boom which is why he only appeared in 3 episodes of Sonic Boom and one was only a 2 second cameo that wasn't even him. This is also the reason why Shadow took so long to get in Sonic Speed Simulator. Oh well, I'm still holding out for LEGO Dimensions 2 to come out and have a Shadow Fun Pack with The Black Rider and the green Chaos Emerald, A Shadow Level Pack with a Black Doom story, The Black Rider, a Black Wing or a Team Pack with Sonic, Sonic having a ring and the Speed Star and Shadow having the green Chaos Emerald and The Black Rider.
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