Reformed Villains Ticklish Headcannon

Starlight Glimmer

-lee

Most ticklish Unicorn in Ponyville, which is huge advantage for Spike

Tickled frequently, mostly by Twilight when she's not looking

Actually likes it, but swore never to tell her old village because of embarrassment and even begged Twilight and Spike to keep it a secret

She wouldn't try retaliating

her most ticklish spots are her belly, sides and neck

-ler

Very much a follower

Starts off easy

She's merciful and will stop once you ask

Since Starly's lenient, you will likely get a chance at revenge