Joel McTiennan is another Interpol agent who was assigned to investigate the Brown family's disappearance with Agent Maria Medina. He is a man of few words and is intimidating with his strong frame and no-nonsense attitude. He thinks that Agent Medina's theories are off-the-wall and that the case is just a dead-end and they will return empty-handed. Because of their different builds, McTiennan and Medina are affectionately referred to as "Big Guy and Small Fry" by their colleagues. Medina thought the W.I.T.C.H. girls were hiding something that would be helpful to thier case, so as a result McTiennan and Medina tried to keep a close eye on the girls; For example, they held a stakeout at Cornelia's home. Will, trying to smuggle Cornelia away, brought a disguised Vathek and an Astral Drop of