This episode is one of three episodes in the series that is a dream sequence, the other two being The Cool Cave Man (1965) and Raptures of the Deep (1964).
This episode is one of only three where Surface Agent X-2-Zero appears in an episode without King Titan. The other episodes are Tune of Danger (1964) and Rescue from the Skies (1965).
This episode was the 21st episode produced and the 22nd broadcast.