Subsea
- Subsea is an Autobot from the Marvel portion of the Generation 1 continuity family.
Subsea is easily swayed, and he goes to pieces under pressure. Neither quality bodes well for his long-term survival.
Fiction
Marvel The Transformers comics

Autobot Military Academy cadets Subsea and Tailgate were persuaded by Flattop to undergo a rite of passage in Cybertron's treacherous Underworld. Once there, they found it populated by violent, malformed mutants. Subsea went into a gibbering panic, and was blasted into oblivion by Warhead. Underworld!
2005 IDW continuity
Subsea traveled with Cliffjumper and Rest-Q to Velocitron to investigate the disruption in the communication network. He was soon killed, along with the rest of the planet by Unicron. Unstopped and Unstoppable
2019 IDW continuity
A member of the Senate Guard, Subsea was a worrywart by nature, so much so that his worries could get in the way of living his life. To cope with this, Groove suggested that he set aside some time every cycle to worry to allow him to get through the rest of the cycle more easily. Sea of Rust II
Prior to the Decepticon taker over of Iacon, Ironhide assigned the acrophobic Subsea to the roof of the Senate to stand guard during Sentinel Prime's speech. As he grumbled about this, he was attacked by the Rainmakers and sent tumbling down into the main Senate chamber after Acid Storm collapsed the roof. We Have Deceived You
Along with his fellow Guardsmen, Subsea was thrown into a lower priority cell before Ironhide's team arrived to rescue them, Subsea later taking part in rescuing the Senators. Prime
When Optimus Prime went to meet with Termagax, Subsea was part of the detachment who accompanied him. While talking to Skyburst about his worrying habits before the Decepticons arrived in force. Sea of Rust II


