Amanda Felicitas Stepto is a Canadian former actress who is best known for her role as Christine "Spike" Nelson in the Degrassi television franchise. With no previous acting experience, Stepto rose to prominence playing the character in the critically and commercially successful CBC series Degrassi Junior High (1987–89) and its follow-up Degrassi High (1989–91).

Christine "Spike" Nelson is a fictional character from the Degrassi teen drama franchise. Portrayed by Amanda Stepto, Spike appeared throughout Degrassi Junior High (1987–89), Degrassi High (1989–91), and the first nine seasons of Degrassi: The Next Generation (2001–10). Starting as an unnamed extra before being given a name and storyline, Spike's character largely revolves around her teenage pregnancy and motherhood.