Here are your friends listed below:
(If I missed anyone, let me know!)
Kirby
Mega Man
Meta Knight
Bandana Waddle Dee
King Dedede
Elfilin
Proto Man
Roll
Sonic
Tails
Knuckles
Amy
Cream
Cheese
Shadow
Rouge
Silver
Blaze
Mario
Luigi
Peach
Daisy
Toad
Toadette
Yoshi
Donkey Kong
Diddy Kong
Pauline
Rosalina
Rick, Kine, & Coo
Gooey
Adeline & Ribbon
Magolor
Ash & Pikachu
Omega
Vector
Birdo
Espio
Charmy
Goh
NiGHTS
Django
Sabata
Arle
Carbuncle
Amitie
Ringo
Daroach