Could it be 'Whiz Kids'? Not exactly a robot sidekick show, but they had a computer and it was all techy and stuff. Maybe you're blending memories?

DUDE! EN Productions, that totally rings a bell! I can't quite place it, but there was definitely this cool edgy vibe to it. I remember the gradient background. Have u tried digging through old tv archives or something? Might have to spend a weekend on this — for science!

Oh man, this takes me back! You're thinking of 'Man from Atlantis' I think. It had that underwater vibe and definitely fit the whole '80s thing, but can't remember a dolphin character specifically...

Oh Greenclaws, that's a deep dive! Not your everyday afterschool show. I remember the guy had like different plants and seeds and each episode was like a mini adventure in that greenhouse. Was defo a trip for a kids show. Got more deets on it?