In the bio, I attribute his presence at Keldor's defeat as seen in the MYP pilot to time travel when Spector intervened near the last battle with King Hiss in which--as in MOTUC--Mekaneck had become a Snake Man again. It was important to me that he be Adam and Teela's contemporary as I felt he had a youthful presence and I wanted more of a set of characters in that age group rather than just Adam and Teela. I admit I'm inventing an attack that resulted in Orius's injury since Skeletor wasn't shown returning in MYP until after Mekaneck had his robotic neck, but I explained his presence during Keldor's injury! I know I'm mixing many continuities here, so I'm sorry if it's gotten all confused. Philip I imagine belonging to a future time, closer to Dare's age.
I wasn't liking my more recent attempts to draw my original Granamyr design, and more and more felt that I'd drifted too far from a recognizable Granamyr. Shadow Wing and maybe some other Dragons of Darksmoke are still coming.
If you mean a new drawing of him, check out the updates to Slave City. If you mean Gecho, he'll be along eventually!