Stan Lee (who created The Incredible Hulk) appears as a scientist presenting a gamma ray experiment for the manned mission to the moon Titan. When Fargo dismisses his work, Lee tells him "Don't make me angry. You wouldn't like me when I'm angry", and the theme music for The Incredible Hulk (1978) is playing softly throughout the scene. Also behind him is an Xray of a skull similar to the one used in the pilot episode of the Incredible Hulk TV series.
In 'Glimpse', Jo uses the threat assessment device while looking at Zane. A list of known aliases appears briefly. One of these, I.P. Freely, was mentioned in 'Liftoff' as the name Zane used to enter a lab in Global Dynamics.