Corrected entry: There has only been one charcter that has been in every episode, and that is Emma Nelson (Miriam McDonald).
Degrassi: The Next Generation (2001)
1 corrected entry
Starring: Melinda Shankar, A.J. Saudin, Aislinn Paul, Stefan Brogren
Our Lips Are Sealed: Part 2 - S5-E16
Continuity mistake: When Alex and Hazel are in the coffee shop at the mall waiting for Paige, Alex is playing with her spoon. She is looking down, but when the angle changes she is looking up at Hazel.
Paige: New year, new look, new Paige.
Trivia: Craig says that Manny reminded him of his 5 year old step sister, Angela. In real life Manny and Angela are sisters (Cassie and Alexa Steele).
Correction: This is not true; I have watched episodes in which she is not featured.