Ryan is a Mii from the Wii.
You may get them confused with Ryan (WaraWara Debug)!
Ryan (Wii) originally appeared as one of the 60 CPU Miis to be included with Wii Sports. Since then, he's appeared in Wii Sports, Wii Sports Resort, Wii Party, Wii Music, Wii Fit, Wii Fit Plus, and Wii Fit U. In most of these games, his internal ID is 022, however in Wii Music it is 32. His Mii data filename is cpu_mii_022.rcd in Wii Sports, mii_022.rsd in Wii Sports Resort, Wii Fit, and Wii Fit Plus, mii_022.ffsd in Wii Fit U, and is cpu_mii_db32.rsd in Wii Music. Wii Party combines all 100 Mii data files into one larger file named mii_rsd.bin in the same ordering as Wii Sports Resort.
As with every CPU Mii, he has Mingling turned off. His Mii name in his Mii data file is ライアン. In his Wii U/3DS-format Mii data file, he was originally created on a Wii (1).
His Mii data file does not contain any unused data.
In Wii Music, his Mii data file is slightly different. While it's mostly the same as it is in Wii Sports Resort, it now includes a filled out Mii ID and console ID. His Mii ID is 80-4e-a8-b7 and his console ID is c2-3d-21-af. His Mii ID tells us he was created on August 27, 2006 at 3:46:36 PM.
According to a September 2020 Nintendo leak about CPU Miis, Ryan (Wii)'s nationality is North American.
In the files for Wii Sports, his dominant arm for Baseball (Batting) is right-handed, Baseball (Pitching) is right-handed, and Tennis is left-handed. His unused dominant arm for Boxing is right-handed. His Baseball Pitching style is normal. He's ranked 25 in Baseball, 38 in Boxing (the worst out of Miis that do appear in the sport), and 34 in Tennis. His group IDs are 2, 1, and 0.
In the files for Wii Sports Resort, his Wii country ID is 1, like all CPU Miis. His dominant arm for Table Tennis is left-handed. He's ranked 99 in Swordplay (the worst), 64 in Basketball, 71 in Table Tennis, and 60 in Cycling. His unused Canoe and Debug ranks are both 22, matching his ID value of 022.
Ryan (Wii) is the worst (in-game) in two sports: Boxing in Wii Sports and Swordplay in Wii Sports Resort. Opposingly, Matt (Wii) is the champion of two sports, and is the only Mii to do so: Boxing and Swordplay. This is likely more than a coincidence, as something like this happening randomly has a really low chance of occurring. Perhaps there is some sort of connection between the two, but no relationship has been confirmed.
Ryan (Wii) appears in promo art for Wii Music playing the harmonica and Wii Party playing Bobsled Highway. For some images, you may have to open them in a new tab to see the whole render.
Names in other languages
Source: Wii Sports Resort