|Type:||Main Character - (1997-2002)|
|Seasons:||4, 5, 6|
|First appearance:||Let's Build Together|
|Last appearance:||Barney's Beach Party|
Jeff was a character who appeared from Season 4-6. He was played by Austin Ball. Like Min, who was played by Pia Hamilton (credited in all her appearances under Pia Manalo, her maiden name) his family came from the Philippines.
- Let's Build Together (first appearance)
- A Different Kind of Mystery
- Good, Clean Fun!
- Oh, Brother...She's My Sister
- Trading Places
- Barney's Band
- Howdy, Friends!
- Aunt Rachel Is Here!
- Easy Does It!
- A Very Special Mouse
- Sing and Dance with Barney
- Let's Play School
- Barney's Night Before Christmas (cameo/uncredited)
- Grandparents Are Grand (1999)
- Snack Time!
- A Sunny, Snowy Day
- You've Got to Have Art
- Barney's Rhyme Time Rhythm
- Excellent Exercise!
- A "Little" Mother Goose
- Good Job!
- You Can Do It!
- Here Comes the Firetruck!
- You Are Special
- Come on Over to Barney's House
- Be My Valentine, Love Barney
- Barney's Beach Party (final appearance)
- Jeff never made an appearance with Riff. However, the coloring page for Be My Valentine, Love Barney did include Riff in it.
- Jeff also never appeared with Maria.
- Jeff only appeared with Curtis in A Different Kind of Mystery.
- He only appeared with Nick in Come on Over to Barney's House