An inventor/engineer who builds and supplies whatever crime-stopping gadgetry his siblings might need (which their father, on the other hand, rarely needs)...particularly the Chan Van. He wears sunglasses, a purple vest and a pink shirt. He's also part of the horn section (usually playing an oboe, to be precise) for the Chan kids' band. In the first episode he was seen on the drums. When the kids separate into segments, he's usually seen with Suzie, Anne, and Tom, but at one point he joined Nancy and several times he's been seen with Flip. Once when the middle kids paired off he went with Suzie, he cares for Anne and is always there for her when she needs him.