PokéBase - Pokémon Q&A
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What I mean is giving your generation 1 Pokemon a held item that was released in G/S/C and then using the Time Capsule to trade it back over to R/B/G/Y so that you have a gen 2 item in your bag. Or are items prohibited from the trade? If not, what would happen if you brought a TM for a move such as Attract back into gen 1? Not only is it an item introduced in gen 2, it only works depending on each Pokemon's gender, which doesn't exist for any Pokemon except Nidoran in gen 1.
Would you even be able to teach the tm to the Pokemon? I read up on the Time Capsule on Bulbapedia but it didn't really have this information.

the answer is pretty obvious, NO.
just like you cant transfer a gen 2 Pokemon over to gen 1, same goes for items, the games just dont have the data on these Pokemon/items.
Source: logic.

if this is good enough to be an answer let me know and ill convert it.
I guess... but on Bulbapedia it says that you can glitch a gen 2 Pokemon into gen 1 :l
so maybe you can do the same with gen 2 items?
You can but it will be a glitch like missingno.
yeah you can just convert it to an answer
Well Pata, if you want to prove me wrong and check for yourself you could give a gen 2 Pokemon that knows only gen 1 moves a gen 2 item (a Lucky Egg maybe) and see if it will go through.

2 Answers

4 votes
Best answer

Actually, the Time Capsule will allow held items to be sent back. Yes, Gen I doesn't know about the items, but Gen II gets around this by hiding the item byte in the "catch rate" byte of the Pokémon when you send it backwards to Gen I. Since catch rate is never really used or modified by Gen I after initial catch of the Pokémon, the catch rate byte is safely exploitable. Gen I games will of course not know that the Pokémon has a held item, but when you send that same Pokémon back to gen II, the held item will be perfectly intact.

Conversely, the reason that Pokémon who started in a Gen I game come to Gen II with an item in tow is because the catch rate of the Pokémon in Gen I is deliberately mapped to a particular item in Gen II.

Source: https://jonstoler.me/blog/information-theory-in-pokemon-the-time-capsule

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And to add to this, Pokémon don't hold items in gen I, so there would be no item to take, anyway. The CODE for the item will transfer just fine, but it won't translate to a hold item, it won't translate to ANYTHING
2 votes

the answer is pretty obvious, NO.
just like you cant transfer a gen 2 Pokemon over to gen 1, same goes for items, the games just doesnt have the data on these Pokemon/items.
There is a glitch where you can tranfer a gen 2 Pokemon only if it knows gen 1 moves, however that Pokemon will be a glitch Pokemon.
Source: logic and the link above.