Echo made his debut in the episode Elemental Brawling Unleashed! Part 1 where he was summoned and alongside Wrath took out a rampaging Ventus Ryerazu using Echo Wing and Shard Shatter before it returned. He then reappears in the episode on the news helping Wrath stop a Haos Elemental Storm. It is then later shown in the episode battling Drago, Trox, Pegatrix, Howlkor, Hydorous, and Pharol alongside Blitz Fox, Crackanoid, Wrath, Griswing, Clutch, Jettra, Skullor, and Aura and they take all of them out with a combined attack except Drago. It then reappeared in the episode Elemental Brawling Unleashed! Part 2 where he was summoned to battle Garweb alongside Blitz Fox, Scorcher, Crackanoid, Wrath, Griswing, Clutch, Jettra, Skullor, and Aura but gets taken out easily. It then reappeared in the episode Field Training where it was summoned and battle a rampaging Haos Goril. It used Echo Wing which sent Goril flying and then it returned. He then reappeared in the episode Truth where he was summoned. He uses Echo Wing on Drago which sends Drago flying and Drago crashes towards the ground. It then reappeared in the episode The Battle With Wrath. When Hydorous and Pegatrix attempted to destroy the Elemental Conductor it chased after them. Hydorous uses Aquos Blast which hits Echo but Echo uses Echo Wing which takes out Hydorous. Pegatrix uses Blinding Throbe which is able to blind Echo allowing Ajit to stop the Elemental Conductor and cause an explosion. But Echo carries Faustus on his back away from the explosion. Faustus then flies on Echo's back. Then Faustus comes off of Echo's back later and tells Athena to give up. When Drago, Blitz Fox, and Nillious evolve into Strength Mode Echo tries to stop them but gets blown thrown back by Drago who uses Pyro Punch. Echo then transforms into Nano-Gear for Wrath and Wrath uses Double Echo Axes but Nillious stops it with Widow Whips. When Wrath is taken out so is Echo.
