Well, I know one way, it couldn't be traded...

He hacked it onto his game and you have colleseum. There's a certain string of code in colleseum that won't allow hacked mews or deoxys onto the game.

Hi my friend has a Mew that he doesnt want and hetried to trade it to me but the game wont let us all it says is " The other trainers pokemon can not be traded" Can sum1 please help?!

My friend has Ruby and I have Fire Red

I'm not very sure. Maybe you need to get the National Dex before the trade can be completed?

Well do you mean fill it or have it because I have it... I just thought of sumthing! Mabey I need to get all 150 pokemon before I can! I bet that's it because you get your star sticker after getting up to mewtwo!

I think I may have the same problem-I try to trade my deoxys(s) from my Ruby (all 202 pokemon, and National Dex) over to my LG (I have the National Dex), but when I actually try, the writing at the bottom of the screen says "The other trainer's pokemon can't be traded now." Maybe LG and FR have anti cheat-gotten-pokemon repellent- not letting them be traded- OR because the Dex only records one type of -in my case, the defense type that I'd only be able to get if I were to travel to the Poke center in New York, and do mystery gift there, thus getting the ticket you need to go to Navel Rock (I know this is the wrong forum, but didn't Navel Rock appear in the orange islands series in the Anime?) or you could use a cheat cartridge to get the ticket (I got the Southern Island ticket on my Ruby-but it don't work).

This is weird because and can be traded along with (who is awsome by the way) If it Doesn't work I Might have to buy Emerald.

Hmmm, i don't think so cause xenogenesis got a hacked venusaur by a trade with my other friend.

We are talking about Legendaries

have you collected the ruby and saphire so you can trade from ruby and sahire.

You need to complete the Sevii Islands side quest to enable the Network Machine hookup from Kanto to Hoenn. Y'know, that thing where you collect the Ruby and Sapphire gems for Celio so that his machine works.
Once that's done, you can trade between Ruby/Sapphire and FireRed/LeafGreen

Sevii Island walkthrough: http://dynamic3.gamespy.com/~psypoke/lg ... hp?part=19

I suppose that answers the question, no? If there's a need to, PM me and I'll unlock this. If not, I'll assume the question is answered.

EDIT: Re-opened as requested.

My is in my Colosseum.

How? Where did you trade it from? Try to include information that can help WPM.

Well, the thing is, that it isnt a cheated one, well not technicaly, but a one thats off birth island. Go to http://www.codejunkies.com, Get the FR/LG Magic Door Codes, and input the one that lets you go to Birth Island. That is tradable to Colosseum.

Dunno about mew or celebi coz i ain't got em but a ha!
If you go 2 the website in steinrrecliner's post, go to POKEMON FIRE MAGIC DOORS and download the cheats for the BIRTH ISLAND. (if you have an action replay) Then activate the code and go throo any door. ANY door. then switch NOT THE GBA the action replay off and walk through the dock door. You should see a Black triangle. The aim is to touch the triangle in the least number of steps possible. Then will come out of the sky and catch him/her/it/that thing...Then you can trade it. It cannot trade if you use cheats to get it in the grass (encounter FR/LG) or in your box (encounter R/S). Hope you got all that!

That pretty much answers your question WPM.

I didn't have a question, note that I answered Mew's question before she posted it.

Alright. Now this will be re-locked.

*closed*