"O"

Debuting in the very first issue of The Transformers back in 1984, "O" is a Bronze Age original whose roots go all the way back to the launch of one of comics' most beloved franchises. A Marvel UK presence, this character has quietly persisted across an remarkable span — with appearances still being catalogued into 2025, nearly 41 years on. Two of those appearances carry key-issue recognition, which speaks to their place in the broader Transformers mythology, and sharing pages with titans like Optimus Prime, Soundwave, and Ratchet puts "O" in genuinely storied company. A fascinating, under-the-radar thread woven into the earliest fabric of the Transformers comics universe.