You can make Laylee say something unique to your character by adding "laylee_win_quote" to your init.gml. If Yooka and Laylee beat your character Laylee will say something related to them.

Don't be afraid to completely disregard the fourth wall with your comments and you can be as savage as you want, because Laylee is very much the savage type. Also please type in all caps.

There are a bunch of characters that come pre-built with compatibility, these are:

Zetterburn
Orcane
Wrastor
Kragg
Forsburn
Maypul
Absa
Etalus
Ori
Clairen
Ranno
Sylvanos
Elliana
Shovel Knight
Mollo
Hodan
Pomme
Olympia
Lilac
Carol
KEL
Sonic (multiples)
French Sonic
Sanic
Senic the Chillidog
The Knight
Hornet
Solaire
Spamton
Hat Kid
Keqing
Pepsi Man
Solid Snake
Samus Aran
Jank Samus
Big Yoshi
King Dedede
The Kid
Sans
Crewmate
Untitled Goose
Peter Griffin
2B
Ronald McDonald
Mario & Luigi
Homer Simpson
Tom & Jerry
Timmy Turner
Garfield
Quote
Morcillo
Rouge
Vlad
Madeline
Goku
Agumon
Guilmon
Cuphead
Greninja
Missingno
Peppino
Springtrap
Hunny Queen
Beedrlil
Vi
Moemon Beedrill
Sora
The Beheaded
Banban
Jetie
Dancing Banana
Papa Louie
Anthem DE
Ness
Fall Guy
Yuuko
Boris Anderson
Wes
Spark
Mulch& Bin
Banjo and Kazooie
Floofy McBee