Lost Vikings style. I'm not sure what you would call this genre, so I kinda just went with the title of the topic. I enjoy these kinds of games. Puzzle platformers where you switch between different characters with their own unique abilities in order to solve light puzzles and get through a level.
I remember playing a Nicktoons game on GBA that was in this style and was quite fun. And it was obvious Wayforward "borrowed" the Danny Phantom portions of the game and used the concept for their Mighty Switch Force games.
Any other games I've been missing that have a similar gameplay style?