Saphnity
One of the spirits living in jewels, introduced by Black Skull Dragoshi. Not to be confused with Sephnity, Saphnity came from the Saphnit family which each had an elemental power, and originated from Lupus. Saphnity's power was of fire. Saphnity was dispatched by the MPVP to destroy the OGers in Member OG 4. Despite his power, Saphnity was destroyed by 'FrEd', the fusion of Fred and Ed.
Due to the confusingly similar names of the evil jewel spirit doohickies, Saphnity was typoed as Sephnity early in the battle. It is likely this typo that caused Sephnity's appearance later in the OG.
Saphnity later appeared in Gamehiker Member OG VIII: The Final Parody. Following his death in Member OG 4, he wound up in Hell. Saphnity was taken by the Chibi-Devil, who used Saphnity to battle Luiigii of the Pipes when he arrived. Luiigii later killed himself and Chibi-Devil at the same time, which brought Luiigii back to life since he was already dead (which is by eerie coincidence the same logic Lupus used to revive himself the first time he died in Member OG). But in the moments before he left Hell, he snatched Saphnity from Chibi-Devil, and he still had Saphnity when he returned to reality.
Luiigii then accidentally placed Saphnity in the SteveTrio's boat, causing it to become the sentient boat Mercantilism. The jewel was later removed from Mercantilism and was ultimately possessed by Luiigii again, who used it to power his laser sword.