I've been planning to make a Jarvis figure for a looong time! Once I saw this Star Wars fig head (sorry I don't know his name)
I immediately saw Jarvis in him, I got him from a toy surplus here in Manila.

It's a simple head swap routine, though making a hole on the head quite took some time, Jarvis head is quite a hard plastic.
Added bow tie and painted Jarvis hair with gray, I'm really glad to finally have my own Jarvis for my Iron Man & Avengers collection. =D