How to complete the Pokedex in generation 5?

I would like to complete the Pokedex in Black/White and Black2/White2. However, with DS servers long been shut down. Thus resulting in the GTS no longer functioning. Is there any possible way - other then using cheat codes - to complete the dex legitimately?

My first theory is back transfering Pokemon from ORAS and X&Y. But I don’t know if the pokebank will allow it to happen.

For some added context: My goal is to 100% complete Pokemon black and white after I beat black once for transfer abilities - I will then reset and transfer that roll to Pokemon black 2 or white 2 - . I will move all the Pokemon from that game to Pokemon, white, white 2, and black 2. (eliminating the need to complete the dex 3 times). As due to a time crunch, I am using an action replay to make of the abismal exp gain in this generation.

Pleaselog inorregisterto add a comment.

All you need to do is transfer Pokemon from previous generations to your game, if that is not possible then no you can’t complete the pokedex without cheating unless you have registered every Pokemon from previous generations. If you could obtain every Pokemon you lost in previous generations then your pokedex could be completed.