Robots: Words with the Short U

Robots: Words with the Short U is an installment in the Word Morph series.

Three Words

 * fun
 * bun
 * bug


 * hum
 * hug
 * rug


 * bun
 * bud
 * mud

Missing Letter
h_m

h u m

Appearances

 * Episode 26: The Roar That Makes Them Run
 * Episode 32: Humph! Humph! Humph!
 * Episode 44: Bug Beard