Thanx guys, in that case who was the leader of the wreckers because when the autobots came back i thought i heard leadfoot give orders and say "wreckers, kill him" because i always thought roadbuster was the leader.
Leadfoot seems to be the leader, the "Wreckers, KILL HIM" line is actually from Leadfoot [as arguably is "This is going to HORT, A LOUT!" but this is a matter of discussion], though they seem to act so in group that he oftenly doesn't even need to give they orders. His "leadership" status is also seen in the Xanthium Bay when you can see him stating "WE ARE LAUNCHING AT DAWN!".