Stolas (Hazbin Hotel)

"..you know what happens when I get lonely, Blitzy.."

Stolas is a character who is native to the Hazin Hotel universe but made his first true appearance in the spin-off "Helluva Boss" - he has a rather minor but important role in the pilot and is confirmed as one of Hell's Overlords, making him one of the most powerful and influential creatures in Hell.

History
Prior to the actual events of the pilot Stolas and Blitzo engaged in a sexual affair, though Blitzo only did this to obtain Stolas' book and thus gain access to Earth and begin the formation of I.M.P.

Stolas was first properly introduced when he called Blitzo to aid him in getting rid of some unnamed people on Earth who were causing him problems by "convincing people global warming exists" - when Blitzo asked if it did Stolas confirmed that global warming was real but more people died if nothing was done about it.

Stolas then went into a vicious, perverted rant about varied acts he wanted to do to Blitzo, promptly causing Blitzo to hang up - destroy his phone and order Loona to eat it.

Trivia

 * Stolas' threatening phonecall was so perverted that it was heavily censored, even in a show that is filled with strong language and adult humor.
 * Stolas is based on the real-world demon of the real name, who is also considered a high-ranking figure in Hell.