I can accept Aleena since she is Sonic's mother in Sonic Underground, therefore she's canon in that universe. And since we don't know who the father is, I suppose anyone could be up for the position, but considering that the creators of Aleena (for a cartoon) and the creators of Jules (for a comic book) were different people, it's very unlikely that the father would be him.
But just because I made a stamp for this, doesn't mean that I think Jules and Bernie are Sonic's only true parents. I consider that Sonic has different parents in different canons, whether it's Jules and Bernie, Aleena and ???, or whoever else they may be. There are many different stories to Sonic and just as many possibilities of who his parents might be.