I found a MLP reference in Sonic Boom!! True!!!

In one of the Sonic Boom episodes, Amy Rose hangs up a picture with ponies. True!!

Possible:

Blue pony with orange mane = Teddy (a g1 colt)

White pony with purple mane = Rarity (a g4 unicorn, this vary is a earth pony)

Pink pony with magenta mane and yellow horn = Princess Bubblegum (unicorn bubblegum!!!)

White pony with rainbow mane = Windy (I possibly think) (a g1 mare (???)

Amy, you're a pegasister!!!