Fathom

Fathom is a Decepticon Titan Master from the Generation 1 continuity family.

Fathom grants the power of armor crush to his partner Tidal Wave.

Fiction

Titans Return marketing material

Fathom was presumably present with Tidal Wave as his larger partner fought against the Autobots on Cybertron.

Toys

Generations

• Siege on Cybertron (gift set, 2017)

Fathom is a redeco and retool of Titans Return Sovereign, having a different robot mode "backpack" for the head mode face. Fathom transforms from a robot based on Safeguard into Tidal Wave's head, though he can also form the head of any Titans Return Deluxe, Voyager, or Leader Class figure.

Fathom and Tidal Wave were packaged with Magnus Prime and Ginrai, Metalhawk and Professor Go, Decepticon Pounce, and Thunderwing as part of the BigBadToyStore-exclusive gift set.

• More information on Fathom at Transformers-Universe.com

Notes

• Fathom is not named anywhere on the "Siege on Cybertron" packaging materials. Rather, he, Ginrai, and Professor Go were named months later on the Trypticon's Titan Master Crunch poster distributed by Hasbro at San Diego Comic-Con 2017.
• As a redeco (other than the new Tidal Wave head) of Sovereign, Fathom has a particularly weird design lineage, since Sovereign was designed to resemble Fun Publications' BotCon 2007 exclusive Beta Maxx figure, itself a redeco of Cybertron Safeguard.