I really want to know who would win

I cheer on Captain (Agent 3)

P.s She became captain when Cuttlefish retired and My Octoling (Which she broke out of the blender in the Deepsea Metro) Became the new agent 3 (Agent 8 -->3)

Is it inner agent 3 or regular agent 3

Inner would destroy the tank the second they see it, regular agent 3 I'd say has a 50/50 chance

true that, if inner agent 3 saw that thing, she would take that down in less than 35 seconds. Just like that airship that blew up over NJ

I mean, its a tank. What is 3 gonna do?

clog the engine

True true, the Ink will mostly cause a misfire in the engine and if it is bad enough, it will most likely explode.

Yeah, but there is still the cannon, treads, and gunner. And the people inside.

tru

Ink doesn't really harm people, but it can blind them, and some people will have face coverings like welding masks, Kevlar uniforms, and bomb defusal uniforms.