The "Bakusou! Love-love Donko" mini-game from Wai Wai Happy! Rokudaime for PS2 has Don and Katsu escaping from Donko, who apparently ate a mushroom that transform her into the giant sized and makes her love-crazy at the same time. Giuseppe Verdi's "Requiem - Day of Wrath" playing during stage 3 of the mini-game just make the situation wackier.
Taiko no Tatsujin Wii
At some point during the storyline, Don-chan had turned into a delinquent and starts making loud noises around the neighborhood, having inspired by a TV show he watched. To make matters worse, the Dokon-Dan joins in making noises too!
This is how the story starts: During the trip in the airport, Katsu, the younger one of the taiko duo, slip on a banana peel and unable to stop himself before he crashed onto a wall, knocking him out. When he wakes up, he find out that the Wada household (plus Hana) were left for Hawaii without him.
In the ending, Katsu immediately felt down after being told by Don and co. that they aren't aware that Katsu isn't with them. What followed after that is Katsu receiving a scolding from both Grandpa Kiyoshi and his grandson Tetsuo, after the grandpa was shocked to find out that his house is literally filled with animals!