User blog comment:The Pop Cult Gamer/deviantART's Sonic information and YoshiWii1/@comment-1392727-20131129100423

Ignore em

About the last point -

"Silver is the son of Shadow and Amy according to the Sega producers."

Actually it is, to say the least, slightly possible that Silver being related to Shadow was one of his old concepts. Though it's obviously scrapped. So this claim isn't highly irrelevant, there was/is a possibility.

There are quite a lot of things derived from DBZ that was put into the Sonic series. According to the Sonic 06 transcript, it officially confirms that Silver is based on Trunks.

Trunks is Vegeta's son. It is possible that Shadow is based on Vegeta (the same can be said for Sonic, who is the series' 'Goku')

This makes the claim that Silver could be Shadow's son slightly relevant. But there's more -

In SATBK, Silver was Galahad, the son of Lancelot, who was Shadow. I guess that says something about Silver's concept, doesn't it?