After a long period of thinking, I was finally able to come up with another alternate form for a Pocket Monster. This is a Mega Evolution concept for an icy demon from the Sinnoh region -- the Sharp Claw Pokémon, Weavile!

-- The eyes were definitely the hardest part, as per usual with my character art development. Some Mega Forms don't change that much compared to their regular forms in battle, and I thought I could show that off in a great way with Weavile! Sneasel is actually a pretty O.K. monster in my unpopular but honest opinion, even if it is still four times weak to Fighting type attacks. I have used a Shiny one in my copy of X version after I caught it as a Sneasel at the Friend Safari. I have yet to encounter a Shiny Sneasel in Pokémon GO, but I hope it'll happen soon!