|First appearance||Hank's Got the Willies|
|Voiced by||Jim Dauterive|
Jason works at Strickland Propane in an undefined role (not a salesman as he doesn't appear on the sales chart). He is the father of Howard Adderly, a ghoulish looking child in a flashback of Hank's during the Season 1 episode Hank's Got the Willies.
Jason apparently is trying to quit smoking he's seen at the Cigarender's meeting in the Season 1 episode Keeping Up With Our Joneses. He also is seen not wearing a Strickland Propane work shirt in his appearances, instead opting for a dress shirt and tie.
- Season 1
- Season 2
- Season 3
- Pretty, Pretty Dresses
- Season 6