Ep. 41: Galvatron's descent and the Autobots' discovery of Atlantis in Ogygia
Aired on October 15, 2005

41
The Autobots search abandoned cities for un-erased Cyber Planet Key data. Megatron, enraged by his defeat against Metroplex, transforms into a ghostly form and descends through the crust to claim the Giant Planet Key. After failing to take it, he emerges with a black aura, easily defeating the Autobots before renaming himself Galvatron. Optimus defeats him using Metroplex's axe and the Giant Planet's Cyber Key. Meanwhile, Coby and Lori recover the data, allowing the Autobots to scout Ogygia and locate Atlantis within a new fissure in an abandoned city.
Episodes
- Ep. 37 · Autobots seek Atlantis while children prepare to enter the wormhole with family support
- Ep. 38 · Ambitions clash as Soundwave locates the Giant Planet while Starscream grows to planetary size
- Ep. 39 · Autobots navigate a dangerous space-time tunnel while evading the legendary Atlantis ship.
- Ep. 40 · Autobots travel to Gigantion and meet Metroplex while Menasor joins Megatron
- Ep. 41 · Galvatron's descent and the Autobots' discovery of Atlantis in Ogygia
- Ep. 42 · The Autobots assault Atlantis while Coby pilots Scrapmetal and teams explore underground tunnels.
- Ep. 43 · Lori confronts Thunderblast while Jetfire battles Thundercracker and Scourge fights Override.
- Ep. 44 · The Secret of Planet X
- Ep. 45 · Scourge hesitates after battle while Bud and Mini-cons explore abandoned Microcity.