Handy visual reference for how big Starscream is compared to human(oid)s.
As always, Starscream transforms into a jet, in this case an F-22 Raptor. He has a hatred of Megatron and seeks to be Leader of the Decepticons. He is bulkier than most incarnations, due to the size of the Raptor combined with the lack of mass displacement. He maintains a simian body shape with a large, triangular chest, large shoulders formed by the jet's distinctive twin tails, long arms, and small or bird-like feet. His chest is still formed by the jet's nose. The jet's powerful main engines end up on his back, allowing him to leap great heights into the air and take flight, much like a jetpack. They also allow him to control his descent if he transforms out of his jet form in midair. His movements are a combination of acrobatic and avian, grabbing hold of a bridge's bottom to launch himself up into the air and transforming in mid-flight to swoop down upon his prey. His arms store heavy weaponry, with a missile launcher carrying six missiles in both arms, a saw in his right arm, and a high caliber machine gun (probably the jet's Vulcan cannon). In the movie's video game tie-ins, he is also seen detaching one or both of his wings and using them as short swords (a reference to his depiction in Transformers: Armada). When in Raptor mode he can simulate the appearance of a human pilot, the same holographic model (referred to as "Mustache Man" on-set and in the credits) that "pilots" Blackout and "drives" Barricade. The official guide to the Transformers video game says he's 31 feet tall (9.4 m), although measuring his 2007 Voyager class toy suggests he would stand 55 feet (16.8 m) tall and 2009 Voyager toy suggests he would stand 46.2 feet tall. The Transformers U.K. magazine states he stands 31 feet (9.4 m) tall, weighs 5.3 (short) tons (4.8 tons) and can travel up to Mach 3.
Copied from a wiki because I'm too lazy to write it all out myself.
Screencaps from the second live action movie:
Leaning down nearly to the floor and spitting at Sam, after cutting the car in half with what looked like a giant circular saw.
Noticing Sam's pal.
Standing up. That's Sam in the right corner, looking tiny.
Chasing Sam. And because it may be hard to tell...
Red's Sam, blue's Starscream. So yeah. In comparison to humans? He's really damn big and intimidating. Just a fun thing to keep in mind when interacting with him, and hopefully these provide good reference for mental images. :) Judging by the movie, 55 feet might not be an exaggeration for his height. But for roleplay purposes I will probably stick with 31 feet.
Copied from a wiki because I'm too lazy to write it all out myself.
Screencaps from the second live action movie:
Leaning down nearly to the floor and spitting at Sam, after cutting the car in half with what looked like a giant circular saw.
Noticing Sam's pal.
Standing up. That's Sam in the right corner, looking tiny.
Chasing Sam. And because it may be hard to tell...
Red's Sam, blue's Starscream. So yeah. In comparison to humans? He's really damn big and intimidating. Just a fun thing to keep in mind when interacting with him, and hopefully these provide good reference for mental images. :) Judging by the movie, 55 feet might not be an exaggeration for his height. But for roleplay purposes I will probably stick with 31 feet.