If ADJL got a live action film I would go for:

Booboo Stewart as Jake Long (he is not only Chinese descent but also Japanese, Korean, and trained in Martial Arts).

Taylor Momsen as Rose (she looks like she is right for the role) or Sydney Sweeney (she is trains in MMA).

Tinashe as Trixie Carter

Zachary Gibson as Spud (Somehow I can just see him in the role).

For Lao Shi Sammo Hung or Tzi Ma.