Guise,

I have a really big discovery that I found the other day. I was able to take the No Result Data and No Entry Data codes and condense them to independent character codes. Now you can have Metaknight and Marth ports working properly and keep the entry and result articles for every other character.
I've tested this for most of the characters, but please let me know if these don't work for any particular character. Use these on the character that's replaced, not the base character (Metaknight over Olimar would use a no entry/result code for Olimar).
Individual Character No Entry Data:
00AD80XX 00000000
XX = Character ID + 0x30
Individual Character No Result Data:
00AD80YY 00000000
YY = Character ID + 0x68
Characters IDs:
00 Mario
01 Donkey Kong
02 Link
03 Samus
04 Yoshi
05 Kirby
06 Fox
07 Pikachu
08 Luigi
09 Captain Falcon
0A Ness
0B Bowser
0C Peach
0D Zelda
0E Sheik
0F Popo
10 (Nana)
11 Marth
12 Mr. Game & Watch
13 Falco
14 Ganondorf
15 Wario
16 Metaknight
17 Pit
18 Zero Suit Samus
19 Olimar
1A Lucas
1B Diddy Kong
1C Pokemon Trainer
1D Charizard
1E Squirtle
1F Ivysaur
20 Dedede
21 Lucario
22 Ike
23 Robot
24 (Pra-mai)
25 Jigglypuff
26 (Mewtwo)
27 (Roy)
28 (Dr. Mario)
29 Toon Link
2A (Toon Zelda)
2B (Toon Sheik)
2C Wolf
2D (Dixie)
2E Snake
2F Sonic
30 Giga Bowser
31 Warioman
32 Red Alloy
33 Blue Alloy
34 Yellow Alloy
35 Green Alloy
36 (Mario D)
And here's some example codes:
Mario Has No Entry Data:
00AD8030 00000000
Mario Has No Result Data:
00AD8068 00000000
Olimar Has No Entry Data
00AD8049 00000000
Lucas Has No Entry Data
00AD804A 00000000
King Dedede Has No Entry Data
00AD8050 00000000
Olimar Has No Result Data
00AD8081 00000000
Lucas Has No Result Data
00AD8082 00000000
So, yeah, have fun, and let me know if any of them don't work. You guys should probably start using these codes instead of the previous No Entry/Result data since it's a lot more efficient and it has the benefit of keeping entry and result articles for every other character. And I've gotta thank Dantarion's wiki for giving the information on this to make it possible.