User blog comment:ValorOmega/War Robots Biggest Questions/@comment-35327227-20181024121551/@comment-27346978-20181024194021

I mean... by definition, rare means "not occurring very often".

So Roboduck and Robospierre, which do not appear very often, are technically the rarest bot.

Anyways, I don't think that Castle will be the best map, albeit it would be a fun one.