Atlas

Atlas is a robotic villain and an enemy of the Teen Titans.

His first appearance was in Only Human. When Cyborg beat him in a video game, Atlas demanded a rematch. However, he wanted to fight him hand to hand, not online. Atlas defeated him multiple times because Cyborg couldn't reach more than 100% because he was half robot. However, Cyborg found that it was his will that let him go over 100% in the past, so Cyborg used this as knowledge to defeat Atlas. He was defeated because Spike had left him and Atlas didn't know how to fix his armor himself.

As a robot larger than human size, Atlas possesses superhuman strength and endurance, and his metallic shell provided him with excellent protection from physical and energy attacks. His arms could also be fitted with external modules which formed them into powerful beam cannons and other weapons; however, since Atlas had left Spike to do the refittings, Atlas had no practical knowledge of how to equip himself.

He made a cameo at the end of Homecoming - Part 2 as one of the recruits for the Brotherhood of Evil. When the Brotherhood set it's plan in motion, Atlas teamed up with Adonis to take down Pantha. However, while it was not shown, Pantha managed to escape despite having a severe disadvantage. Atlas wasn't seen during the first phase of the final battle, however was seen towards the end of the second phase. Atlas is briefly seen getting shot by Cyborg's sonic blast, and was ultimately defeated when Bushido sliced his leg off. It's unknown if he was flash-frozen or not.

Biography
Atlas was the supreme master of fighting. He never lost a match--either online against some twerp in Gotham City, or in real life against a half-human, half-robot named Cyborg. And why wouldn't he win? He was a robot--he was programmed to win.

We don't know who made him or where he came from, but Atlas has one purpose: To win. That is until Cyborg showed that he could go above what his systems told him--breaking his 100% point, Cyborg defeated Atlas.

Of course, this isn't all to say that Atlas didn't have help--not at all. In fact, Spike, his "Mechanic" (i.e., lackey), was the only one to keep Atlas running until Robin convinced him that Atlas was only using him, and that Atlas was afraid of losing him--otherwise, who would upgrade and repair him? Spike left with the Titans when Atlas was defeated.