Yes, you can.
On one of those sites, just click Browse, select the image, then click Upload. After that, find the Direct URL and paste in there...How hard is that?
Seeing as you aren't going to do it though...Here's an image of him...
I wouldn't be surprised if someone made a sprite of him in RMXP style. Perhaps you should try searching a bit more... If you don't mind him being like he is in the original game, then use this sprite sheet.
http://www.spriters-resource.com/snes/ff6/sheet/6702