Classes and Class Types

Ok, sorry for the recent barrage of questions, but this interface is a little unintuitive...

Under class management, view male classes, there are three groups (Generic, I-Bot, and another I-Bot), same goes for female. Now, under the male generic group, there is an actual class called I-Bot, but not for female. What are these for, and can I safely delete/rename them?

[Revan]

No, you can not remove them without breaking the Monster Arena. In the next version I will have the script ignore these classes, so they are safe :P