I have a couple Pokémon named "Test Pokémon" with a number next to them that I would get rid of as I don't like them, I just caught them for data.
I encountered a glitch a couple of times when the catcher was first introduced where I'd catch a Pokémon and then have two of them for some reason. I'd release the duplicates if I could.
I suppose I would release... None. Gotcha there, didn't I? But the reason for that is that they're all just eggs and I don't want 'em to end up in the cold outside world... I'm not that heartless.
Well, I won't tell Pokéchild-protective-services on you or anything, don't you worry. *sneakily reaches for phone*
Guess, I will be that cruel to release eggs. I only need Articuno and the rest is just too much. I would trade them if I could, but alas.
I would probably release the ones I don’t really like to keep only Pokémon I like more. Spoiler: If we had to choose right now, I’d probably release these Looky, Syai, Woowie, Tymie, Bloot, Ballie, Cora, Dadillidadoo, Grouam, Nowie, Packsie, Fabby and Why. There are some I have right now that I don’t really like but as I like their evolutions I’d keep them to evolve them. Also I may hatch wow first egg someday.
I don't think I'd release any Pokémon. I'm very picky about which ones I catch so I really don't regret any that I have in my collection. (actually I still have a long list of Pokémon I have yet to catch! but that's a different story.)
:: Anything I caught that I mistakenly thought was common, but wasn't. :: My initial Magneton that I caught, if only because I have a shiny version now. (Any subsequent shiny catches will impose the same fates on the originals.) :: Assuming trading never becomes an option, every single non-duplicate of those stupid Eggs. I probably won't release my duplicate Missingno., because it's about making a statement - a statement of how much I'm willing to suffer for the sake of data collection.
Oh yeah! I totally forgot I had those. I hadn't thought much about them because I was referencing their nicknames towards Final Fantasy titles. I probably should get rid of the excess.
I have some duplicates I'd like to release too, probably not legendary eggs since I've grown quite fond of my egg pile but I do some a few mons I really wish I could release.
You can edit a Pokémon's nickname freely. On its name there will be an icon that looks like a pen inside a square. Click that and it'll bring up a text box to edit (you might have to click your mouse on it to make it appear). From there you can change the name, and hit Enter to finalise your change.