An incredible post from Twitter User and tournament organizer immewnity
“For his birthday in 2009, Creatures Inc gifted [President of The Pokémon Company] Mr. Ishihara cards based off of his two dogs at the time, Pokey and Jeekun. Both dogs unfortunately passed away the next year (at 11 and nearly 16 years old, respectively), leaving these cards as a beautiful memory of the pups.”
Worth noting, Jeekun’s Poke-Power (forgive my rough translation):
“When you play this card from your hand onto your Bench, search your deck for one Ishihara card, show it to your opponent, and put it into your hand. Shuffle your deck afterwards.”
The blog post mentions that the cards synergize well with the birthday gift card Mr. Ishihara received in 2008, “Ishihara’s Secret Hand”. So it’s safe to assume a custom card was gifted by Creatures in 2008 as well (and potentially earlier years). Unfortunately, the blog only goes back to 2009, and I can’t find a picture of the 2008 birthday card.
A mega jumbo from Ishihara’s 2013 birthday, featuring the same “present box” set logo in the bottom right as the 2009 cards. Ishihara notes he shares the same birthday as Caroline Kennedy, JFK’s daughter and U.S. Ambassador to Japan at the time. She had her first week on the job in Japan in 2013 the exact week of Ishihara and her birthday, which is probably why Ishihara had it in mind.
They’ve been on his publicly viewable blog for years, so I don’t think he minded sharing them. I think the Twitter user stumbled across his blog which was not widely known about.