Absolution

 is a most likely a Misc Tank.

Design
The is an extremely heavily modified. It is modified with components of other tanks all mashed into one. It includes aspects of the Nokideth,, Manipulator, Trappory and of course Surgeon.

Technical
Like its component the Nokideth, the can open and close. Closing will disable its frontal Surgeon cannon and swarm drones, just like Nokideth.

Upgrades from

 * Probably somewhere in Misc?

Upgrades to

 * Hopefully nothing dear god

As the

 * You would be extremely overpowered and almost nothing would pose a threat.
 * However, you are probably quite weak for a Misc tank if all of its components have no buffs.

Against the

 * Redistributor is your only hope.

Trivia

 * From the remaining evidence, this tank seems to be heavily associated with the user 359 from the discord as the user in the image is using that name. Knowing this, the name seems to be in reference to the user's profile picture, which is that of an Absol (the Pokemon, not the community member).
 * This tank was almost lost until I checked my recycle bin for old woomy stuff.