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I received an Ivysaur named Slim Vynes through Wonder Trade a while back (he's a Venusaur now). Love him to death. There's also a Vivillon named BLAKE NURR who came from WT as well; he hasn't seen use, but for some reason I just love the name.
Also, a funny coinkydink with nicknames:
>HeartGold
>obtain a Charmander, name him Anthony
>Anthony becomes a badass Charizard and wrecks shit; not even close to my main mon but still a cool bean
>Gen V happens, then Gev VI; don't touch HeartGold in a long time
>X/Y
>Receive a Charmander through Wonder Trade
>Decide to put him on the same team as Slim (I make teams post-story to fight the E4 again and again; it's cool making a bunch of Pokémon into Champions)
>badass Charizard helps defeat the Elite 4 again, enters Hall of Fame
>a while passes; look at Charizard's information on a whim
>notice OT for first time
>OT: Anthony
>call that Charizard Anthony forever more
But yeah, I don't generally do "clever" nicknames- I'm an actual-name-fag. I just recently started breaking into the more "clever" nickname scene with a Shinx named Chain Lynx, but I'm sure there have been others in the past.