Juan was a character who appeared in only five episodes in Season 3. He was portrayed by Michael Krost. He is Carlos' little brother.
- If the Shoe Fits... (first appearance)
- Any Way You Slice It
- Gone Fishing!
- Who's Who on the Choo Choo?
- Hats Off to BJ! (last apppearance)
- Juan never appeared with Shawn (not wearing glasses), Derek, Tina, Stephen, or Ashley and Alissa.
- Juan is mentioned by Carlos in some Season 3 episodes, even though he does not appear in any of those episodes.