Keres

Uncharitable Spy
Contributor
Buff banner: Gives full crits and a +75% ammo capacity buff (For pure DPS and minimal rocket jumping)
Takes -65% reduced fall damage.
-35% self-blast damage
Buff banner as of now is completely fucking useless as you can taunt to get minicrits anyway, and also it has no passive buffs like the conch (Health regen)
Or battalions (-30% Self-blast reduction) so give it crits to compensate like demoman.

Battalions backup:
-40% Self-blast damage
+50% Ammo capacity
Wearer takes -90% fall damage
(Personally I thought the battalions was fine but the fall damage is absolutely horrible and buries all the buffs into the ground, so give it fall damage reduction.