Alphaboy is the name of a live-action segment on Sesame Street written by Adam Rudman which ran during Season 26.

In a 1998 episode, Big Bird pretends he's "Alpha-Bird" and goes on Alphaboy-style adventures.

Segments

B: Bicycle (EKA: Episode 3681)

Alphaboy takes a bumpy bicycle ride.

F: Feathers (EKA: Episode 3524)

Alphaboy fans his father's feet with feathers.

L: Leaves (EKA: Episode 3656)

Alphaboy leaps into lots of leaves.

N: Noodles (EKA: Episode 3465)

Alphaboy eats noisy noodles.