Taking the rivalries we know, we only know two or three stories behind them. See what I'm getting at...?
Jak vs Ratchet
Daxter makes fun of clank, and they start fighting, so Jak and Ratchet break it up, start talking, get into a fight about who's better friends with their sidekick and boom fightfightfight
Parappa vs Spike
Parappa is walking around rapping and then a monkey jumps on him and Spike laughs so Parappa gets grumpalumpa and fightfightfight
As you can see, I'm not very good at this. So make your own, ya bums!
Sir Dan is strolling through polygon land, smiling away, before the red dot of radec's sniper appears on his chest. He dodges away and hides as Radec reveals himself, switching to his shotgun. Radec calls out Sir Dan as a coward who failed his king and his nation, taunting him for the way he died in combat and challenging him to face him like a man. Sir Dan becomes outraged and launches himself at Radec, knocking the shotgun away. Radec fades invisible, laughing, as an angry Sir Dan prepares himself for combat.
Official Paramedic of the PSAS Forums bunker.
Big daddy thinks FP is his lil sister and FP fights back
Drake sees sweet tooth gets scared, sweet tooth wants to scare him more or something drake fights back
Pyramid Head rivalry: Pyramid Head fading away slowly...is desperate...he needs to battle a sinner now or he will disappear forever...causing Silent Hill to descend into chaos...he suddenly hears something and turns around, spotting an ice cream truck coming his way...he brings his sword up and slashes at it...it splitting in half and crashing...it then explodes...suddenly a figure comes out of the flames...his body scratched up, but he seems to not care..."well, look what we have here...you see that now heaping pile of scrap...that was my baby, and now it's destroyed...so I'm gonna return the favor to you...HAHAHA" Pyramid Head faces Sweet Tooth's direction...he senses the evil that is him, and all the sins he has committed...this is the thing he needs...to defeat Sweet Tooth so that his body stays intact for longer...""Don't talk? aw, that's gonna take away all the fun of killing you" Pyramid Head brings up his blade. "So you wanna fight huh? ooh this is just what the Tooth ordered! This is gonna be fun..." Sweet Tooth brings his machete out and charges...Pyramid Head charges as well..."SHUT UP AND BLEED!" they clash blades...battle commences.