User blog comment:CaveJohnson333/RWBY Characters Hurt/Heal/@comment-19214484-20160429045555/@comment-26397825-20160429070603

Which is why you need Penny. She can hack the other robots, and her soul and aura protect her from being hacked. She's human in her thinking, which means she has odd pathways and robots can't hack it because it's illogical to them. But she can still hack other robots and control them.