Which retired bots would you like to see return?

Even if they're not remotely strong/meta enough to win matches, which bots would you love to see make a return?

Personally, I'd like to see Blip and Quantum again, even if only for exhibitions. It was nice having non-spinners that can genuinely beat verts. There's a small chance that Claw Viper and Hydra may return, so i won't count them for my answer.