6* Negan AR bug

I completed an offer and got some coins, so on a whim I purchased a “reunited lovers” cache and got a 6* green Negan. His rush is supposed to be 600 maim damage to a line of enemies, and all teammates get +40 crit for 2 turns.

The 6* green Negan I pulled only had 500 maim damage, and nothing else. No crit bonus. What is going on with this?

It increases as you upgrade his AR, same as all other legendary toons.

Level his ar. It starts off at 500 and then at lvl 6 it’ll do 600.

There’s a dropdown you can select on the AR description while viewing the character’s dossier to see what changes as it levels up. Same for the Active ability.