Why did every Deadpool variant suddenly stop fighting when they saw Peter Pool in Deadpool & Wolverine?
The truth is, there’s no Peter Poole in the comics. They’re actually referencing Spider-Man the one Peter that Deadpool considers his best friend.
Because of studio rights, Spider-Man couldn’t appear in the Deadpool movies. So Marvel created a completely normal, powerless guy named Peter.
Basically, Peter Poole is a legal loophole for Peter Parker.
And when the Deadpool variants see their Peter, they immediately stop fighting because every Wade across the multiverse seems to love and protect Peter.