Complex sentence: Starscream transforms into a McDonnell Douglas F-15 Eagle and serves as the Decepticon Air Commander, leading the other Decepticon Seeker jets, many of whom share his physical design.
Split into simpler sentences: Starscream transforms into a McDonnell Douglas F-15 Eagle. As Decepticon Air Commander, he leads the other Decepticon Seeker jets, many of whom share his physical design.