After playing this game for over 100 hours.... I just noticed there are no robobrains in Boston.

Anyone else find this odd?

Actually, yes. It is a bit odd since there is at least one reference to Robobrains within the game. So it's not like the Devs forgot about them.

They must be hanging out with Centaurs

I suppose they didn't want to include them when there's the new Assaultron. Same with Mutant Hound and Centaur