The Red Leader led the red army during a civil war on his planet.
The Red Leader is a short, pink-skinned humanoid, wearing a red military suit. He has a large nose, white mustache, no eyes and a monocle.
When Ben Tennyson and his team arrived on a planet whose inhabitants were 2 different colours; red and blue, the Red Leader set his army to stop Ben. Ben as Lodestar, magnetically stole their weapons and questioned them about their war with the blue aliens. The Red Leader said that they were attacking them, so they are defending themselves.
Later, on a ship, the Red and Blue Leader argued about their species' sage's colour. The Red Leader said that he was red whilst the blue leader said that he was blue. After arguing, they started fighting. Ben as Humungusaur stopped the fight. When Ben tried to shake hands with the Blue Leader, Ben found out that the blue aliens shake with their left hand whilst the red aliens shake with their right hand. The war started again.
Later, Ben got the 2 leaders to sign a peace treaty. Both of the leaders shined a light at Ben's face causing him to fall of a cliff but Ben saved himself as Goop.
When the war started Ben tried to stop them and accidently destroyed the statue of their sage. Later, the armies declared a war against Ben and merged their affiliations together as one, a purple army, causing Ben and his team to escape their planet.