Quoted By:
All UBs. Because they are main characters that transform into abominations that you fight in the main story to defeat the edgy darkness and return the chaos emeralds, you can't catch them, thus they are not Pokemon.
SPOILERS:
LILLIE IS UB01
GLADION AND LUSAMINE ARE UB-02'S
GUZMA IS UB-03
FABA AND HAU ARE UB-04
HALA IS UB-05
AND THE MC IS UB-06 SO YOU KILL YOURSELF
