Brother Blood (Teen Titans Go!)

Brother Blood is a major recurring villain from Teen Titans Go!. He is a malevolent and spiteful old man, who servers as the headmaster of H.I.V.E. Academy as well as the archenemy to the Teen Titans, namely Cyborg. He is most important for being the inventor of Pain Bot, his former sidekick and the current little buddy of Cyborg.

Biography
Brother Blood made his first appearance in "Waffles", where he kidnapped Cyborg and Beast Boy, (who at the time, were saying nothing but "Waffles") and plotted to torture them with the help of his trusty torture device, a newly invented robot named Pain Bot. Robin, Raven, and Starfire tried to stop him, but Brother Blood trapped them too and forced them to watch as Cyborg and Beast Boy were mercilessly ripped apart, electrocuted, burned alive, and blown apart by Pain Bot. All the while, they kept saying nothing but "Waffles". Robin, Raven, and Starfire took it upon themselves to torture Brother Blood by doing nothing but saying and signing "Waffles", which drove him to madness. Brother Blood ran out of his evil lair, flailing and screaming, setting the Teen Titans free.

In "Little Buddies", Brother Blood fought with the Teen Titans on the dark streets of Jump City at night. All of Brother Blood's attacks were to no avail as the Titans were too powerful for him. Just as Robin told him to give it up, Brother Blood unleashed his secret weapon. It was Pain Bot and he was back for revenge. Pain Bot tortured and maimed all of the Titans as Brother Blood watched and laughed in satisfaction. Starfire used her eye beams to black Pain Bot's arms off, setting the Titans free, so Brother Blood sent out another set of arms. While he did this, Beast Boy distracted Pain Bot by using himself as bait, while Robin took on Brother Blood by throwing a Birdarang at him and blowing him out of his boots.

After the destruction of Brother Blood, Cyborg started to like Pain Bot and he stole him and kept him for himself. Cyborg was able to train Pain Bot to act like less of a torture device and more of a little buddy. Since then, Pain Bot has remained a loyal and heroic friend to Cyborg, putting a new hero into the world and leaving Brother Blood without an ally.

In "Baby Hands", Brother Blood was wreaking havoc in Jump City with a giant laser cannon that was also a giant memory-erasing doomsday device. He tried to blast the Teen Titans with it so they would forget who they truly are. Recently, Robin had been unappreciated by the other Titans, so he thought that if they lost their memory, this could be his chance to mold them into better people. Robin tricked the other Titans into getting blasted by the memory eraser and Robin beat up and stopped Brother Blood before he could erase his memory.

Brother Blood later started stealing a bunch of weapons and the Teen Titans had to stop him. Robin had lied to the other Titans, claiming to have all the powers that they had, so they all expected him to bite off more than he could chew. Robin eventually had to come clean and tell the other Titans the truth so that they could handle Brother Blood, while Robin did nothing but sit around, choreographing them with his baby hands.

In "Accept the Next Proposition You Hear", Brother Blood invented a mind-control device.