Artephius is a character from The Adventures of Puss in Boots.
Artephius runs one of San Lorenzo's finest macramé owl shops. At first he seems like your run-of-the-mill confused old man, but it turns out he's over a thousand years old and is history's greatest alchemist. He has moments of clarity, but then other times he's extremly senile. His magic has kept him alive for centuries, but his brain has gotten so filled up with stuff he can't remember a whole lot. Now he just really knows macramé owls.
It is revelaed in the Season 6 Episode "The Moving Finger Writes" that he is one half of the Great Mage Sino. Sino split himself into two halves, good and bad, Artephius being the good half. The bad half was locked in the Forbidden Citadel.