BlockoobLG

BlockoobLG is a variation of the glitch oobLG. This glitch still allows the player to obtain many Pokémon but instead of the game getting the Pokémon from a tile writing glitch Pokémon it gets it from a tile within a block instead.

This allows the player to obtain certain Pokémon unavailable with ordinary oobLG that would otherwise be interpreted as control characters by the tile writing glitch item, such as Dratini and Kabuto.

In Yellow

To perform blockoobLG, simply adjust the quantity of item 23 and do steps 8-10 on our oobLG article with the exception of opening the PC without 6F.

When we adjust the quantity, we are adjusting this block http://i.imgur.com/B60i76u.png however the changes may only apply to the menu until a new encounter or saving and resetting.

Since this block has a tile that lies at y=0C, x=0A (controls D059), we can use that tile to get specific Pokémon depending on the block ID.

Which blocks give which Pokémon needs documentation; however, blocks C6, C5 (dec: 198 and 197 respectively) gives you Dratini, and block 13 (dec:19) gives Kabuto. Both are Pokémon unobtainable with normal oobLG.