You can switch bots anytime you wish and still keep your current level, rank and upgrade points, I do it all the time (the bot I choose varys on my mood and the bot I'm facing
). The only catch is that you need to re-apply your upgrade points every time you switch and you loose any challenges that may have been sent to you. I understand that, I mean, think about challenging a Cobalt just to find an Avalanche in the ring:eek:. that'll make anybody crap their pants...