The playhouse robot, who gave Pee-wee the "secret word" each week and served as a "brain" element in the show.

He spoke with a stutter, and was made from various parts of old electronics, including: old camera attachments (eyes), a boombox (chest), phonograph (torso), and a typewriter with no keys (head) and Vacuum Cleaner Hood as the top skull. The robot referred to himself as "Conky 2000" (after the first season, though he used this in episode #3 in the first season) when Pee-wee turned him on. According to evidence suggested in the episode "Conky's Breakdown", there may be more than one Conky robot. Often needs servicing from Johnny Wilson, the repairman.

Voiced by:

• Gregory Harrison (Season 1)
• Kevin Carlson (Seasons 2+)