Ox

Ox (Ironhide) is normally a calm and reasonable bot, using his incredible strength and skill as the Autobots' transportation expert to keep the team well-supplied. The strongest of the Spychangers, in his powered-up form his strength even rivals that of Fire Convoy (Optimus Prime).

However, an angry Ox is a dangerous Ox. His temper runs very hot, and ends up using his strength for destructive ends. Perhaps experience will cool him down one day.

He's been friends with Counter Arrow (Mirage) for a long time, despite them both being bull-headed types.

(Source: Transformers Wiki)