101Leafy researched the game with the Hilltop Works fan translation patch, English translation by Cargodin
Fat Subデブ潜

Fat Sub is row 31 of the game's guilü table, with the element Metal. The battle screen reads (Shoot Fire!): it is weak to Fire.
Drop table
After the battle the game rolls a number from 1 to 64 and picks the outcome whose share holds it, then rolls again for the amount. Shellfish Powder and Guilü Balls can be taken from you as well as given.
| Outcome | Chance | Amount |
|---|---|---|
| Nothing | 33/64 | |
| Gives Shellfish Powder | 25/64 | 1 (39/64), 3 (25/64) |
| Gives Guilü Ball | 4/64 | 1 (55/64), 3 (9/64) |
| Gives Men's Extract | 2/64 | 1 (64/64) |
Guilü table: Light Bulb Head Fat Sub Birdcage Lass
English translations by Cargodin for Hilltop Works Fan Translation Patch: https://www.patreon.com/hilltopworks/posts/kowloons-gate-160555525?collection=18503