The Maximum Heat Knuckles Attack (マキシマムヒートナックル Makishimamuhītonakkuru?) is a move used only by Knuckles the Echidna in Sonic Adventure and Sonic Adventure DX: Director's Cut. When using this move, Knuckles can attack several enemies at once at high speed, much like Sonic the Hedgehog's Light Speed Attack. This move can only be performed when Knuckles has the Fighting Gloves.