Another Patron suggestion thread

I have 2 masterminds that I'm running. I'm not sure which Patron Powers they should master if any. I'm looking for something that would fit thematically. So, I'm hoping someone could come up with suggestions and guidance.

My first one is a Technology Bots/FF. He's basically a midget version of Master Mold. I'm thinking Mace, but I don't like the idea of a master robot using a foreign object as a source of power. I'm looking at Mu Mastery here. What do you guys think?

My other MM is a Thugs/Poison. I'm going with a 60's Batman villain reject theme here. He's a viper in a top hat and tuxedo. I really have no idea which Patron to take if I should go with one.

Thanks for your suggestions.

Opinionated post to follow:

Take Mu for the bots/ff. It's pretty, and -KB immob is a bonus.

Thugs/Poison? Viper in a top hat? I'm thinking either Ghost Widow or Mako would be good thematic fits.

Viper in a top hat? That confuses me deeply but um...anyway.

Bots/FF, i think Mu is your best bet, if Mace doesn't tickle your fancy.

and I'm stumped on the Thugs/Poison, so i can't help ya their.

I think I'll be going with Mu with my Bots/FF.

For my Thugs/Poison, I have him dressed similar to The Penguin, but gave him the Viper mask/face so it's more in line with poison. I'm considering going with Mace Mastery so it would appear like he's carrying a cane. How does that idea sound? I'm sort of seeing the Leviathan suggestion, but I feel like Ghost Widow is something more too undead/netherworld for the theme I'm going with.

Thanks for the suggestions thus far, everyone.