Lady Deathstrike
The Reavers appear alongside Lady Deathstrike when she goes down to the Morlock's tunnel and tricks Wolverine into coming down there, hoping to get him to open an alien ship that she found in the tunnel. When the ship is opened, an alien comes out of the ship and sucks the life out of the Reavers. So Lady Deathstrike has to work together with Wolverine to defeat the alien. In the end, the X-Men defeat the alien and all the Reavers' life energy is sent back to their bodies.