James Quillus tells the group of his Patron for the first time in Episode 8:The Treasures of Terlis. Squelaiche is described by James as an Archfey Leprechaun. In fact Squelaiche is a bit more then "just" a Leprechaun, he is the demigod of Leprechauns, trickery and illusions. According to James, Squelaiche is fond of the color green and will ask James to do mundane and benign favors for him from time to time.
As part of the The Inner Circle of The Seelie Court, he is the court jester to Queen Titania and her consort Oberon.