Crossword clue: before becoming the autobot leader, optimus prime was known by what name on cybertron
2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).
Possible answers
orion
5 letters
otdb
a constellation on the equator to the east of Taurus; contains Betelgeuse and Rigel
(Roman Catholic Church) a greeting signifying Christian love for those assisting at the Eucharist