Johnny Sokko and His Flying Robot

The Challenge of the Two-Headed Monster (1x8)

Air date: Nov 29, 1967

A double agent named Harlequin has tricked Unicorn into assisting him with his plot...and receives more aid from a fearsome, two-headed beast. One head spits fire, while the other spits hot oil. How can Giant Robot vanquish this new devilish foe when he may not even survive it?