User blog comment:Jimlaad43/Official Ragnabot 2 pre-event discussion/@comment-2118191-20160308143239/@comment-2118191-20160308150416

Well, that was my personal argument for not having Plunderbird 1 or Plunderstorm, as both are a bit too similar to Plunderbird 2.

In all honesty, my choices are based on how I split the different versions in my own Ragnabot. I did admittedly split the robots between two generations (one for S1-S4 and one for X1-S7), but the idea is still the same.