Sunstorm. Originally just a generic amber and white coloured Decepticon jet who featured for like a second in "More Than Meets The Eye Part 1" alongside equally generic looking blue and white and purple and white Jets (as can be seen
here) - blink and you'd miss him. Then in 2003 e-Hobby released the G1 Sunstorm toy - so suddenly this generic and forgettable generic Jet had a name and persona as written by Ichikawa Hirofumi. Since then he's appeared in the
Dreamwave comics,
Universe,
Cybertron, and of course the sycophantic
Animated Starscream clone.
And if TakaraTOMY ever made a
Masterpiece Sunstorm, I'm sure he'd sell like
hot cakes!