Mental

Mental was the machine gunner of Daley Squad, Rico's squad during the Clone Wars, earning his name for his psychotic tendencies, though he remained an effective soldier. He was presumed to be dead but it turns out Cody rescued him. He got hit in the head hard so he wasn't much use, and so was kept in a support role in the Imperial Military, where he encountered Rex a few years into the war.

At the time, Rex has been captured, but had tricked Cody into thinking his inhbitor chip was activated and he was loyal to the Empire. Mental, not fully understanding the state of the galaxy, started reminiscing about the old days, and ended up helping Rex send a signal to Rico's Brigade by telling him a computer password. He then walked away.

Shortly afterwards, Wolffe came to save Rex, and Mental got his head hit again. He remembered everything and joins Rex and Wolffe to escape.

The three-man squad was outnumbered fifty to one during their escape, but Mental killed fifty Imperials with his MIRV Machine gun before getting knocked unconscious. Rex picked up Mentals' weapon and together with Wolffe, cleared out the base before returning to carry Mental out.

Unfortunately for them, they got stuck flying in Imperial territory in the middle of space. When they ran low on fuel, Mental suggested disguising themselves as Stormtroopers to go down to an imperial planet to get fuel. They killed three Stormtroopers and used the armor to disguise themselves. They went to a bar to buy a ship but Mental accidently blew their cover. They fought their way out and escaped on some speeders, then snuck into an Imperial outpost and stole a ship.

They were again wandering in space when the encountered Racket's ship. He explained that they broke away from Rico because they wanted to attack Coruscant since it would have a weakened garrison. Rico didn't want to though so that is why they left. Racket offered them a change to join "Racket's Regie," but Mental was suspicious and trusted Rico, so he stole a ship and escaped on his own. He had been flying for days when he got a transmission from Mace Windu's ship. He joined Mace in his flight to warn Rico about Chaos. Mental, Rex and Wolffe all met and Rex and Wolffe apologized for not leaving with him.

Upon meeting Rico, the two old friends caught up. Mental learned for the first time that their old squadmate Rookie had betrayed Rico, much to his dismay. Later, Rex and Wolffe asked Mental join the 104th, and he accepted.

Rico asked them to find a weak spot in the Empire and Mental decided to attack Sullust. It had many materials and supplies and was very lightly guarded. He told this to Wolffe and Rex. They agreed and started planning. However, the attack failed and Mental was captured and imprisoned with the Delta Squad.

Aqua and Sub Squad rescued Mental and Delta Squad (save Fixer, who was dead). Mental later served with Captain Rex and Wolffe intill the assault on the moon near Coruscant where Mental was knocked out he went into surgery.

Mental spent several months recovering. His Doctor, Dr. Schlieffen told everyone Mental was dead, possibly to keep the psychotic clone off the battlefield. Because of this, Mental's only visitor was 55, who soon set the record about Mental's life straight. Mental recovered in time for the campaign on Zepho, during which he contacted Aqua.