Credit goes to GooeytheDragon, Big thanks to JamesG for Kimo.

To the distant Past: Several weeks after Mercury meets Kimo. Before the Thief Guild changed hands.

After Don Nigel and Robin failed to recapture Kimo, they eventually found out he's hired a bodyguard named Mercury to safeguard him. They knew Kimo would be difficult to recapture now, so they decided to hatch a plan to recapture Kimo and pamp Mercury to sell him to The Dark Gator Pirates at a high price knowing Kroko was hunting Lugias.
They hired an Aggron (the self proclamined diaper king) to hire the duo to capture both of them. After hiring them, the Aggron immediately flattened Kimo and brought him to his lair, knowing Mercury would turn himself over as he's Kimo's bodyguard.

After throwing his new Kimo diaper in his pamp pile and announcing what he plans to do, giving Kimo to the thieves guild and pamping Mercury, he was overthrilled at all the money he'll be making. Never knowing that Mercury snuck up behind him, and overheard everything, and even breaking his contract with Mercury.
After overhearing this, Mercury gave him a very hard bonk on the head and knocking him out, the Aggron fell on his pamp pile unconscious, leaving him at Mercury's mercy.

Mercury deciding to have his own little fun by pinning the Aggron down and using Pamp Breathe to slowly turn the Aggron into a diaper. As Mercury was taping the Aggron diaper around his waist, he saw Kimo yelping for help, happy to see Kimo safe, yet neatly folded on his pamp pile.
Mercury gave poochpamp a nice hug while Kimo thanked him for rescuing him, thus making their friendship deeper. They decided to turn the Aggron over to Pamper Down, but they did keep the Aggron's pamp stash so they had diapers and pamp treats for their adventures.

End

Looks like Mercury getting ahold of his pamp breathe, quite a unique pamp tf I adore, messing with kimo is part of Mercury's policy, but now wearing or kidnapping him as it results in the contract being terminated and Mercury free to do whatever he wants to you. Only Mona 3, Mercury and sometimes Tai only ones allowed to mess with him.

Mercury Quicksilver belongs to Me
Poochpamp belongs to JamesG
Lugia and Aggron belongs to Game Freak