Can't trade a Challenge's Poke(s) just t' go to a move tutor, you're stuck with Thief.
FR-NI Challenge Update
Spoiler Alert!With Rainbow Badge in hand, I headed back t' the Pokemon Tower. Already took care'a them Channelers to give Blastoise some sorely-needed Special Attack EVs, so I made my way up the tower unopposed. Put that poor Marowak's soul t' rest and booted out them Rockets. Pokeflute get! Made my way south to the Silence Bridge 'n awoke (and caught) the Snorlax. Also got me my Super Rod (thnx j) and went fishing North of my to-be residence Vermillion City, catching a Poliwhirl on my first catch.
... But I don't actually want another Water type, so I instead flew off t' Cerulean and traded said Poliwhirl for my final team mate; Jynx Zynx. 'N I thought I was bad at nicknames. Since it's 10 levels under Josephine and Blastoise, I flew off t' Cycling Road to murder a million Special Defense-lackin' Poison types and level grind a bit. Spoiler: things didn't go as planned.
Fightin' Snorlax #2, just one Ice Punch away from the KO, Snorlax KO's Zynx with a critical hit Headbutt. Zynx's first battle ended in utter failure... ... ... Next match, she takes on an ugly ol' Muk. Immediately felled by a critical hit Sludge. ._. Back to the center again...
Next, a Koffing's Sludge doesn't crit, but instead poisons Zynx. notamused.jpeg. That's what I get for usin' Powder Snow, apparently. Hax. Lots of hax.
"Weezing used Sludge!
Back to the center AGAIN...
"Grimer used Sludge!
Zynx was poisoined!
ARE YOU ****IN' KIDDING ME?!?! D:<"
Nurse Joy is clearly conspiring with this madness, hopin' to see you and your injured Pokemon again and again and AGAIN. Bullshit like this happens at least once every Challenge for me, but ****in' twice? This is outrageous. But it seems Lady Luck was done torturin' me, as I was finally able t' KO more than one Poke without gettin' poisoned or crit--
"Koffing used Sludge!
Zynx was poisoined!"
... Returning a few minutes later after saving 'n soft resetting, hoping it was just some retarded glitch that caused chances of anythin' to be elevated, I continued down cycling road. At which point, another Muk immediately crits Zynx.