Mr. Stone/Manga/RS

Mr. Stone makes an appearance in Let's Invite Something New! Go! Go! Go!. Similarly to the games, he is the President of Devon Corporation.

were sightseeing around Rustboro City and notice the Devon Corporation. The group peek inside and see Mr. Stone doing his speeches and how he would get 3800 yen. He noticed the group outside and invited them in. Mr. Stone showed the group his inventions which made excited. Seeing Clefairy's enthusiasm, Mr. Stone decided to have Clefairy try it out. Clefairy showed him a backpack that transformed into a helicopter. However, when Clefairy tried it out, the wing of the helicopter broke and the whole invention exploded. Mr. Stone became disappointed that Clefairy let him down.

Inside, one of Mr. Stone's employees showed him an invention which was an advanced power tool that Mr. Stone tried out, still calling Clefairy a failure. He used the tool which was actually a ray gun and zapped Clefairy. However, Clefairy survived instead of vanished even though Mr. Stone wanted Clefairy to disappear. As a result, he threw the ray gun on the floor and it broke, only for to fix it. Mr. Stone became happy that Pikachu was able to program it to make Clefairy disappear but when Pikachu tried it out, it gave Clefairy a shiny feeling instead of what Mr. Stone wanted. As Clefairy left with the device, Mr. Stone and the employee from before slam the door to get him to come back. Mr. Stone, along with some people who were zapped by Clefairy, chase after him for making them look ugly. Mr. Stone then fell to the floor when Clefairy zapped himself in order to make himself look like a monster.

Unlike other media, Mr. Stone does not mention anything about his son, Steven, nor did Steven appear.