And maybe even transport it to another game? I would try it myself(maybe), but I don't have Pokémon Red/Blue or Pokémon Bank on my 3DS. Just wanted to know, I'm quite curious...
This feature is not yet available. It is part of a planned update as part of Pokemon Sun/Moon. So here's my two cents of conjecture....
FWIW there will probably be a check that the index number of the Pokemon being transferred falls within a range, and as the MissingNo's values fall out of that range then I'm sure there'll be some error handling built in to deal with the situation. So no MissingNo in BattleSpot sadly!
For more info on Pokemon internal indexing I refer you to this article from The Smog.
