This dinosaur is almost completely light blue except its claws, its red sail and teeth. It resembles a short-sailed Spinosaurus that really wants to bite your knees. It is quick and agile, very good for stealing eggs and attacking enemy pack's nest. It was made by Mr_Fantasia, and the model and animations are relatively average by today's standards.
• Because when the Irritator swims it moves up slightly, it can appear to fly when it swims along the surface of the water. The same is true for the remade Baryonyx.
• The legs are unintentionally human-like, as said by the creator himself.