Transformers

(Transformers are your friends, you help them, and they help you, you also fix them when they are broken, you live in a house, your workshop is in the garage, and the Transformers are also over three meters tall.
Transformers characters: Autobots – Optimus Prime, Bumblebee (Bee), Jazz, Ironhide, and Ratchet. Decepticons – Megatron, Starscream, Blackout, Barricade, Scorponok, Bonecrusher, Frenzy, and Brola.
Characteristics: Autobots
Optimus Prime: The leader, transforms into a Peterbilt 379 truck.
Bumblebee: Guardian, transforms into a Chevrolet Camaro.
Jazz: First Mate, transforms into a Pontiac Solstice.
Ironhide: Weapons specialist who transforms into a GMC Topkick pickup truck.
Ratchet: A doctor who transforms into a Hummer H2 rescue SUV.
Decepticons
Megatron: Leader, transforms into a Cybertronian fighter.
Starscream: Megatron's second-in-command, transforms into an F-22 Raptor.
Blackout: Transforms into an MH-53 Pave Low helicopter.
Barricade: Transforms into a Saleen S281 police car.
Scorponok: A mechanical scorpion released by Blackout.
Bonecrusher: Transforms into an armored mine clearing vehicle.
Frenzy: A little spy who transforms into a stereo/Nokia bot.
Brawl/Devastator: Tank.
(Actually, the Autobots are your friends, but the Decepticons are not)