The Z-Fighters took FOREVER to defeat Frieza. Let's find someone who can do it better and faster.
What military force could stop Frieza with/or without preparation under the conditions that:
- The army must be recognized as an official "army". (aka, the Gurren Brigade, a slew of Kryptonians, or several future versions of a character are not allowed)
- The army cannot consist of multiple copies of an individual. (aka - an army of Reed Richards/Batmen holding Ultimate Nullifiers/God-bullets)
- The army (if land-based) may engage Frieza on a planet where he is not allowed to planet-bust.
- Or face him from orbit, in his weakest form, but with planet-busting allotted.