Here a picture of the Ryo-san // Kochikame thing:
kochikame.jpg
In Gintama episode 13, Katsura and Gintoki pretend they're pirates looking for the secret treasure of "One Park" so they can join a group of space pirates. At the end of the episode they replay a clip where Katsura introduces himself to the crew but with different audio:
A parody on Naruto's dattebayo.