If I can come up with good nicknames, yeah, I'll do it. Examples...
Blastoise - Tank. It's a My Little Pony: Friendship Is Magic reference, taken from Rainbow Dash's pet tortoise. I only recently started using it.
Nidoking - King Badass. Because Nidoking is a badass, and "king" is part of its default name.
Whiscash - Muddy. There's a minor-league baseball team in my state called the Mudcats, and their mascot is a catfish named Muddy the Mudcat ("mudcat" is a southern slang for catfish).
Plusle, Minun, Dedenne, Emolga, Pachirisu - Pikachu v.(Insert generation number here). Because that's what they are! They're blatant attempts to make the Pikachu lightning strike twice! And I hate them! As for Marill and Azumarill...
Azurill, Marill, Azumarill - Piblu, Pikablu, Raiblu. Back in the Red/Blue era, my brother told me of a "secret pokemon" that was "like Pikachu but a water-type called Pikablu." It was a fake, it was a rumor he took at face value, but when Gen 2 and Marill came around, yeah that's what I called them. As for Piblu and Raiblu, references to Pikachu's evolution and first form.
Machamp - Goro. Comes from Mortal Kombat (the first one), the sub-boss Goro had four arms and was harder than Chinese algebra.
Delphox - Archmage. Because it looks like a fox wearing a wizard robe.
Vaporeon - Mikau. Named after a character from Legend of Zelda: Majora's Mask (my favorite Zelda game), specifically the one who dies and becomes the Zora mask.
Zebstrika - Zecora. Another My Little Pony: Friendship Is Magic reference.
Leavanny - Katy. It's obviously modeled after a katydid (a bug that looks like a leaf), so there ya go.
Granbull - Davy Boy. Named after the British Bulldog, Davy Boy Smith. There is no bull in Granbull.
Skiddo, Gogoat - Daniel Bryan. Another pro wrestling reference? YES! YES! YES!
Swinub, Piloswine, Mamoswine - Porco Rosso. Named after a Hayao Miazaki movie.
Joltik, Galvantula - Arachnaphobia. I'm terrified of spiders. But I like Joltik and Galvantula.
Probopass - Groucho Marx. Because that's what it's modeled after, Groucho Marx glasses.
Hitmonlee - Owen Hart. Another pro wrestling reference. He's a black hart! He's a two-time Slammy winner! He'll kick the leg out of your leg!
Empoleon - Napoleon. Named after Napoleon Bonaparte, the former Emperor of France. No I don't know what he has to do with a penguin.
Greninja - Blue Blazer. Because it's blue and faster than a bullet. Also, another Owen Hart reference!
Barbacle - Barbacle Man. Because he could be the lost Mega Man boss.
Hawlucha - Various lucha libre wrestlers. My go-to name is El Santo.
Gardevoir - Cirsene. I could've sworn I heard this name somewhere, but I'll be damned if I can tell you where.
Drilbur, Excadrill - Bottles. Named after the character of the same name from Banjo-Kazooie. Bottles is the one who teaches you moves.
My one regret is that there isn't a fighting-type colorful enough to reference Randy Savage.
