CELEBI TRICK

[Torchickens]

@Axaj i'll make a video.
Celebi corresponding G/S/C item is HM09.
its description says it is an attack that can cause paralysis and this HM is not stored in the TM/HM list so it's useless.

TMs and HMs have different effects on Pokemon Gold depending on whether they are held in the TM/HM pocket or not; therefore TM01-HM12 have two different effects. I have noted on the topic below HM01 outside the TM/HM  would send a ????? to the PC named HM01. I also believe BlueLatios also noted this on an older topic.

The only downside though was it made the game crash after; perhaps I should try the same item again with 5 pokemon in the party?

The effects of all the glitch items on pokemon gold/silver are noted here: http://forums.glitchcity.info/index.php/topic,5302.0.html

If there is another extended method to force an item into the items pocket exclusively could we take advantage of HM01 with say 5 pokemon?

I will force it into the item pocket with a code first.

Edit: I refused to give HM01 a nickname but then the music sped up very fast and the game crashed. I shall see what happens when you nickname it.

Edit2: When nicknaming HM01 it is definitely a ?????, but I got the same result; the music sped up again and the game crashed.