Which studio ported The Wrath of Cortex to GameCube?

Eurocom Entertainment Software ported Crash Bandicoot: The Wrath of Cortex to GameCube.

The original game was developed by Traveller’s Tales and first released for PlayStation 2 in 2001. Rather than having the original developer handle every version, Universal Interactive assigned Eurocom to adapt the game for Nintendo’s console. Eurocom is therefore the correct answer when the question asks specifically about the GameCube port, not the game’s overall developer.

The GameCube edition arrived in North America on September 17, 2002, after the PlayStation 2 and Xbox versions. It retained the same basic platforming adventure, in which Crash and Coco gather Crystals while opposing Doctor Neo Cortex, Crunch Bandicoot, and the Elementals. The release also supported connectivity with the Game Boy Advance.

A common mix-up is Traveller’s Tales, because it developed the original title. Vicarious Visions is associated with other Crash projects, including Crash Nitro Kart, while Radical Entertainment later developed Crash Tag Team Racing. Eurocom’s role here was specifically the GameCube conversion of The Wrath of Cortex.