Errol is a foil character in Jak II and the main antagonist in Jak 3. He was the commander of the Krimzon Guard while serving as the right hand to Baron Praxis, and later led an uprising of the reformed and expanded Krimzon robotic department known as the KG Death Bots, after his near-death and subsequent resurrection as a robot. He later came into leadership of the surviving Metal Heads, and continued his war against Haven City from his KG war factory while communicating with the oncoming Dark Makers. He desired world domination or destruction, using the powers he believed the Dark Makers would give him upon their arrival. However he was ultimately killed in the Wasteland at the hands of Jak.
YinYangJak[]
Errol never officially made an appearance in the US3 spinoff, but his does show up a number of times in flashbacks and in Jak's dreams.
Erol join the Brotherhood of Evil.