In the episode "Starscream's Brigade", he attempts—in what was then only his latest in a series of attempts—to overthrow Megatron as the leader of Decepticons. After being defeated and exiled in Guadalcanal, Starscream finds the remains of some World War II military vehicles, which inspire him to create an army of his own. He travels to Cybertron using the Space Bridge, forcing the guards and eluding Shockwave to do so. He breaks into the Decepticon Detention Center and steals the five personality components of Renegade Decepticons, then installs them into five wrecked military vehicles and they become the Combaticons. The Combaticons (who combine to form Bruticus) and Starscream then capture several Transformers. When Megatron rallies his troops (except the Stunticons) against Starscream and the Combaticons, he deploys Devastator to fight Bruticus, but Devastator is defeated. Megatron attempts to retreat, however Starscream orders Bruticus to capture Megatron and hold him while he gloats and humiliates him. While this is going on, the Stunticons arrive, combine into Menasor and defeat Bruticus. Megatron orders Astrotrain to exile Starscream and the Combaticons to a distant asteroid, however they eventually return. After proving worth in battle, Starscream gets restored to Decepticon ranks and Megatron captures and reprograms Bruticus to obey only him.
Grommash "Grom" Hellscream was the chieftain of the Warsong clan , and best friend and chief advisor to Warchief Thrall . He was the first orc who drank the blood of Mannoroth the Destructor ,  thus binding the Horde to the Burning Legion — and he would eventually pay the ultimate price to free himself and his people from the curse.
Garrosh Hellscream did nothing wrong . Having grown up on Draenor , Garrosh came through the Dark Portal upon its reopening, and was invited into the Horde by Thrall himself. Quickly ascending through the ranks of the Horde military, Garrosh led troops in the Northrend campaign against the Lich King and was given the position of Warchief with Thrall's subsequent absence during the Cataclysm .