Tide's picture is missing from the "Challenge an Opponent" page, and also doesn't appear if I battle him (her?).

Do you have the image blocked or do you have adblock that could be blocking it? Also which browser are you using? I can see it fine on firefox.

I'm running Firefox 16.0.2, without anything blocking images (I could see the rest of the challengers fine, for example). It's kind of strange - maybe a half hour after I sent my earlier message, I checked again and I could see Tide but a few others were missing (Eclipse, I think, and one of the hard challengers). Now I can see all of them. Maybe whatever caused it was intermittent and has stopped now? I'll speak up if I notice it again but I certainly don't mind if you don't want to spend time chasing down an intermittent thing that isn't actually impacting the functioning of the site.

If you can see them now then there isn't really anything I can chase down really. You might want to restart your computer and clear your cache on Firefox. Locking this since it resolved itself.