Titled "Bunnie Butt kicker"
From the artist:

Bunnie Rabbot is more powerful than you think. The girl can not only fly and project protective force fields, she can also hit every bit as hard as Sonic and Shadow. However, as she draws power directly from her biological body, fighting at that level of power leaves her so drained she can barely stand very quickly.

Still, when it's do or die, Bunnie is more than capable of doing.