Forum:Super Sledge with status effects?

I was running through the stuff in my inventory and noticed something strange: a Super Sledge that has the same stats as any other Super Sledge (Dam 25, WG 20, Val 180), but this one had HP -25 under 'Effects'.

I looked up Super Sledge on the wiki but the only other one listed is Fawkes', and this is not that one.

Thoughts?

if you have broken steel it's the status effects of an overlords sledge but it only works for them.