Nautilator

Nautilator is a Decepticon Seacon from the Transformers universe, a submarine-based warrior who transforms into a sea creature and combines with his fellow Seacons to form the massive gestalt Piranacon.

Nautilator surfaced in the pages of Marvel's The Transformers #49 in 1988, right at the cusp of the Copper Age, joining one of comics' most expansive robot sagas at a moment when the Transformers universe was firing on all cylinders. With a catalog presence stretching across an impressive 37 years — including appearances in Transformers Compendium — this character has quietly endured far longer than many flashier debuts of the era. Sharing pages with titans like Optimus Prime, Megatron, Soundwave, Starscream, and Grimlock, Nautilator exists in genuinely legendary company. For dedicated Transformers completists, tracking down those appearances is exactly the kind of deep-dive hunt that makes collecting so rewarding.