First pokemon you traded that was not an in-game trade

[Raticate]

My first trade was with my then-best friend in Pokemon White. I remember I traded an Emolga (named Tiger) for a Crobat. I really loved that Crobat and I used him in the Elite Four. Unfortunately I restarted White about a year later and lost him.

 

[Jeff The Killer]

The very first one I remember was I traded my Dewott named Acheron with my friend who gave me Keldeo.

I told him to trade me a different one, but he told me he was fine with it. I cherish Keldeo because of that.

 

[2071]

I think that mine dates back to all the way to when I was plying Pokemon Platinum. I had this friend who really liked playing Pokemon and he needed help in his Pkmn HG so I helped in trading my Giratina and I think also Palkia and Dialga. It did really help him In return I got Lugia and some other few Pokemons.

 

[baconana]

Pokemon Black, with one of my best friends. We were on Skype talking about pokemon, and I said how i had never had a shiny pokemon (or seen one in the wild at all). They said "let's trade, i have a surprise for you"
That is how i got Samus, my shiny Charmander.

 

[manugutir]

I don't quite remember, but I'm sure it was on Pokémon Diamond a while ago, and I think it was a shiny Pokémon from a friend that I met in YouTube, although I think the Pokémon was created with hacks or something Anyway, I was so excited for trading via Wi-Fi, which was a whole new thing for me!

 

[Gary Johnson]

I think mine was a geodude for a chimchar. Between my own Ds(es)