Danny may had inspired Duncan a character from "Total Drama Series". In fact both boys share the same similarity:
Both boys have a green trademark: Danny's green eyes and Duncan's green mohawk.
Both boys have a light-tan skin, (only when Danny transforms)
Both boys have a conflict with the jock: Dash (DP) and Tyler (TD Series)
Both boys have a father who is aging.
Both boys are now dating the Goth girl: Sam (DP) and Gwen (TD Series)
Both boys use to be interested in the Hispanic girl: Paulina (DP) and Courtney (TD Series)
Both boys hate the single guy: Vlad Plasmius (DP) and Chris McLean (TD Series).
Both boys have the same letters in their name: D,A, and two Ns.
Both boys had a conflict with an African girl: Valerie (DP) and LeShawna (TD Series).
Both boys love to cause trouble.
Both boys had been viewed a criminal and been put in a cell: Danny was sent to ghost prison and Duncan was sent to Juvie Hall.
Both boys have a kind and a caring mother.
Both boys have a sibiling(s).
Both boys enjoyed kissing the Goth girl: Sam (DP) and Gwen (TD Series)
Both boys wear the same colored sneakers.