First Arc: The Fallen Kings -- Chapter 5 -- Part One -- {A Bad Omen}
They also developed programs for special people with the rare, non-lethal, non-parasitic virus: pokerus. kenko has also provided for numerous hospitals, including the one they own.
The Guild's Dog Part 4: Blastoise
"jolteon, the crossbow wielding, pokerus stricken rogue is devoured by the beholder, missing completely as he got eaten, never to be seen again" eevee said, as he took jolteon's character and threw it with the rest of the remaining models.