The Constructicons are a group of fictional characters from the various Transformers continuities. Although they vary from depiction to depiction, they are usually Decepticons who turn into construction vehicles and combine into a larger robot.
Read more about Constructicons: Transformers: Generation 1, Transformers: Robots in Disguise, Transformers: Armada, Transformers: Energon, Transformers Animated, Transformers: Universe, Transformers: Revenge of The Fallen, Transformers: Power Core Combiners, Transformers: Prime