Optimus Prime was created as a character by the toy company Hasbro in collaboration with the Japanese company Takara, with his story and personality developed further by Marvel Comics writers and artists in the 1980s.

Who “created” Optimus Prime?

  • The toy/visual design of Optimus Prime comes from Takara’s transforming toy lines that were adapted and branded as Transformers by Hasbro for the US market.
  • The characterization (his name, heroism, leadership role, backstory, dialogue) was largely shaped by writers and artists working with Marvel Comics and the original animated TV series once Hasbro licensed the toys.

In-universe creator (story lore)

  • Within many Transformers storylines, Optimus Prime begins life as Orion Pax , a younger robot who is rebuilt into Optimus Prime after being gravely damaged.
  • In some continuities, the ancient Autobot Alpha Trion is portrayed as the one who rebuilds Orion Pax into Optimus Prime and helps set him on the path to becoming Autobot leader.

Why there’s no single “one person”

  • Optimus Prime is the result of a collaborative creative process: toy designers, corporate planning at Hasbro and Takara, comic writers, cartoon writers, and voice actors all contributed to the character fans recognize today.
  • The iconic, noble personality of Optimus Prime is especially associated with his long‑time voice actor Peter Cullen, whose performance became a defining part of the character’s identity across multiple series and films.

TL;DR: In real life, Optimus Prime was created by Hasbro and Takara’s toy designers and then fleshed out by Marvel Comics and cartoon writers; in the story’s lore, he is often “created” when Alpha Trion rebuilds Orion Pax into Optimus Prime.

Information gathered from public forums or data available on the internet and portrayed here.