[@Duthguy]

Ahh, don't worry about the no In-Training for BlackGabumon.  He should come off Tsunomon or Tsumemon so if you wanna go with that.  Not that rookie should matter too much XD.

I think you should just keep in the line Gabumon > Garurumon > WereGarurumon.  Or Gaomon line.  One thing you could also do is Gabumon > Garurumon > WereGarurumon > MetalGarurumon with ZeedGarurumon as a sort of Burst Mode.  Or maybe the two MetalGarurumons could do a fusion to become ZeedGarurumon.