Ironhide is the name of several different fictional characters in the Transformers universes. According to the original creator of the Transformers names, Bob Budiansky, Ironhide was named after the television series Ironside.
Read more about Ironhide: Transformers: Generation 1, Transformers: Robots in Disguise, Transformers: Armada, Transformers: Energon, Transformers: Universe, Transformers, Transformers Animated, Transformers: Timelines, Transformers: Prime