Nuada

Nuada, also known as "the silver handed one", was a Tok'ra symbiote who posed as the Goa'uld ruler of the Celtic people on Earth. Sometime during his tenure there, he lost his hand in a battle and so replaced it with a healind device which earned him his nickname. A team of archaeologists came across a small stone in a Tor located in Llyn Fawr, Wales, UK, which&mdash;when translated&mdash;stated "Healing comes from the god himself, he of the silver hand". It is only through this stone that the SGC knew of Nuada, and it is because of his willingness to heal that it is assumed he was a Tok'ra.