The Maximum Heat Knuckles Attack is one of Knuckles the Echidna's techniques, useable in Sonic Adventure. The attack sees Knuckles automatically carry out a chain of Power Glide attacks to destroy all enemies in the vicinity. It is something of a counterpart to Sonic's similar move, the Light Speed Attack.
In Sonic Adventure, the technique is unlocked by picking up the golden Fighting Gloves upgrade from the rocky ledge above Big's hut in the Mystic Ruins jungle. The technique is charged up in the same way as Sonic's Light Dash. Knuckles begins to glow with a red aura; release near an enemy to see the echidna speedily pulverise them. As with the Light Speed Attack, Knuckles leaves a glowing trail behind him while blitzing through the foes. Knuckles is shown using a similar ability in Team Super's Team Blast attack against Metal Overlord in Sonic Heroes.