Icey Stan

On hand

 * Blizzard

Taking care of

 * Mimikyu

Released

 * buzzwole

Ride pokemon

 * lapras
 * Stoutland
 * Articuno
 * Mantine

Befriended

 * Pikachu
 * Poipole
 * Raichu
 * Clefable
 * Crystal

Temporarily owned

 * Lampent
 * Alolan Raichu
 * Alolan Ninetails

trivia

 * She takes lillie’s place
 * She could be mistook as a male because of having Stan as her last name but is comfirmed to be a female,