Although Perrey Reeves is a series regular as "Mrs. Ari", her character's real name is never revealed. She is always referred to as "baby" by Ari and most other character's either refer to her as "Ari's wife" or "Mrs. Ari" , however in the third to last show in the series it is revealed that "Mrs. Ari's name is Melissa, said by her new boyfriend Bobby Flay.
Turtle shows the guys a picture of the back of Leonardo Dicaprio's head, sent to him by someone named Lukas. Here he is referring to actor and longtime member of Dicaprio's posse, Lukas Haas. Haas also makes a guest appearance in season 8 on two episodes in season 5, where he plays a writer named L.B.