The Groosalugg (affectionately known as ‘Groo’) was a dedicated half-human warrior from the dimension Pylea. His name means ‘brave and undefeated’. He was summoned from the Scum Pits of Ur to Com-shuk (mate) with Cordelia and absorb her visions. Groo ended up proving to Cordy that he was a good man, not a tool of evil and she appointed him as the new ruler of Pylea before she escaped Pylea.

Back in L.A, and just as Cordelia and Angel were close to starting a relationship, Groo unexpectedly appeared at Angel Investigations. He explained that he had been deposed in a revolution on Pylea, and decided to find Cordelia again. Cordelia rekindled her romance with Groo and even went as far as to find a mystical spell which allowed her both to have sex with Groo and to keep her visions. Angel was jealous of Groo for many reasons, as Cordelia had chosen Groo over him and Groo was just as formidable a fighter as himself. Unable to withstand being witness to the relationship between Cordy and Groo, Angel gave them money and asked that they go on an extended holiday.

When Cordy and Groo returned, they found that some terrible things had happened in their absence. Cordelia immediately began to pay more attention to Angel, and Groo started to realize that Cordelia did not love him but rather Angel. He finally mustered up the courage to tell Cordelia this, and then left L.A.