Kat: Very unique. Her mobility is her strongest point. Unlike other characters, her double jump is an 8 way dash. Gets her around corners and avoiding supers. Her level 1 isn't the best but it's a welcome addition. Her level 2 is one of the most helpful if used properly. Her level 3 is just as average as Evil Cole's. It's basic and it's fun by a whole lot but the attacks and size of the level 3 is kind of easy to avoid. It's like a mix of Kratos and Evil Cole packed into one.

New costume looks nice. Reminds me of Cammy

Emmett: Honestly, at my first play with Emmett: I had more fun with Emmett than Kat but he's definitely not a stronger character than Kat. Though, after playing with Emmett a couple of times: He's really... average. His ability to summon turrets/generators/boxes makes him way too predictable to opponents and could make Emmett a really tough character to master. The AP generator is worse than PaRappa's, the two summoned weapons (some kind of Plasma launcher and a shotgun which doesn't help as much) aren't varied much and you'll definitely be focusing on the plasma launcher more often than the shotgun. The turret however puts him in a safe spot for the while but that can be destroyed easily... Still helpful much.

His Level 1 super is a horizontal shot with a really punishable end delay (the shotgun is 2 bursts horizontally and diagonally but the end delay is pushed further a bit). The plasma launcher is the best level 1 because it goes straight through the opponents and goes much farther than the regular shot.

His Level 2 isn't as strong as Toro's at all. It only hits opponents in a short-medium radius and can be easily avoided by air/roll dodging whereas Toro's is kind of hard to dodge and is in a much bigger radius.

The Level 3 (which i underestimated at first) isn't as powerful and godlike as i hoped. He's like Sweet Tooth's level 3 sprinkled with a few limited options. The first big issue was that i couldn't kill opponents under me at all. That's a downfall because close opponents can roll around me and waste my level 3 completely (That was my first impression till TerminX just told me now that it can be done by pressing down + square. Thank you TerminX). The aerial mines were way too high and i doubt that anyone is going to jump that much height to land onto them. The last option i had was to use the Air Hawk technique but that's only best used as a last resort to the level 3 super. And when i used it, it only targets a random specific area on the screen and looks very predictable.

In terms of competing with characters like Radec, Nathan, Jak, and Ratchet: He's good. In terms of competing with the entire cast: He's average. He's a mixed hitter at close combat so that's balanced enough for him. Though he's not the best and most welcome addition at first, he's only fun at first grip of the character and a few short bursts within.

The new costume isn't varied either. It's like Dante's where they just added/removed a few things on the original costume and called it a day

Costumes

Wet Suit (Nathan Drake)
Apollo (Kratos)
Logan Graves (Emmett)
Black Kat Suit (Kat)
Ninja (Fat Princess)
Wrestler (Sackboy)
Jailbird (Sly Cooper)

Minions

Veger, Hades, Zarok, Specter, Alias, Preacher, Chloe, Azimuth, Young Nathan Drake, Nathan the Koala, Nevi, Bakuki, Mooselini, Yunica, Torn, Syd, Zoni and Jasmine.