He was a strange-looking figure with amphibian hands and lizard-like eyelids. Naturally he was worshipped as a God, although he may just have been a visiting extra-terrestrial.
This theory holds more water than you might think; he came down to Earth on an incredibly long rope which he kept permanently tethered -- to his invisible spaceship?
This ‘rope’ appears to have supplied him with vital life-support facilities, plus he could use it as an emergency exit to the Heavenly realm, which he did on numerous occasions.
In fact it appears that he was the first of many Heavenly Tibetan Kings who popped down to Earth on the end of a rope. There was no stopping them.
This practice came to an abrupt end when the rope was accidentally severed by seventh Heavenly King, DRIGUM-TSENPO.