[ASM & Hex] Pokemon ??? Before capture or battle[Em]

[rubenturen]

im using emerald
Hi i Want to do this:

I Want to do so that every pokemon (in pokedex and battle) Will be ?'s. until you catch it or see it in a trainer battle.(in trainer battle it needs to reveal the names before the pokemon gets thrown out, so that
It shows the name in that battle. And in a Wild one it needs to be after you caught it.(what i mean is just do so it is ?'s in Wild battles until you caught it, but still reveal the pokemon in a trainer battle too.))

I May need asm but im not so good at it. So Pls give a good tutorial,
Or if there isn't Any alreaddy done asm routines, Then pls help me
Create one.

Thank you