This is a depressing one since I remember him from a decade ago.
I started probing around for my first round of raids and seen he dropped to the grey, so I mass probed dropped a roamer mustered up what ever resources I could built what ever I could for fleet and WHAM!

The attacker has lost a total of 472.160.000 units.
The defender has lost a total of 5.615.392.000 units.
Debris Field: Metal 2.039.983.200 Crystal 1.612.548.000

I decided to share because forums need some life and it was my first decent hit coming back, if Grimm does come back then glotrb.