Rachel is a Mii from the Wii.
Rachel originally appeared as one of the 60 CPU Miis to be included with Wii Sports. Since then, she'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, her internal ID is 038, however in Wii Music it is 39. Her Mii data filename is cpu_mii_038.rcd in Wii Sports, mii_038.rsd in Wii Sports Resort, Wii Fit, and Wii Fit Plus, mii_038.ffsd in Wii Fit U, and is cpu_mii_db39.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, she has Mingling turned off. Her Mii name in her Mii data file is レイチェル. In her Wii U/3DS-format Mii data file, she was originally created on a Wii (1).
Her Mii data file does not contain any unused data.
In Wii Music, her 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. Her Mii ID is 80-4f-8e-9d and her console ID is c2-3d-21-af. Her Mii ID tells us she was created on August 30, 2006 at 9:10:12 AM.
According to a September 2020 Nintendo leak about CPU Miis, Rachel's nationality is North American.
In the files for Wii Sports, her dominant arm for Baseball (Batting) is right-handed, Baseball (Pitching) is right-handed, and Tennis is left-handed. Her unused dominant arm for Boxing is right-handed. Her Baseball Pitching style is normal. She's ranked 37 in Baseball, 8 in Boxing, and 24 in Tennis. Her group IDs are 8, 1, and 1.
In the files for Wii Sports Resort, her Wii country ID is 1, like all CPU Miis. Her dominant arm for Table Tennis is right-handed. She's ranked 76 in Swordplay, 45 in Basketball, 64 in Table Tennis, and 87 in Cycling. Her unused Canoe and Debug ranks are both 38, matching her ID value of 038.
In Wii Party's Friend Connection game, the default score rankings establish a relationship between Theo and Rachel, with them being 8th in the best friendships category at 52 points (Almost Pals).
Rachel appears in promo art for Wii Music playing the jaw harp.
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This Mii originally appeared on the Wii!
Here's how to recreate them on the Wii:
Names in other languages
USA English: Rachel
USA French: Rachel
USA Spanish: Rachel
PAL English: Rachel
PAL French: Rachel
PAL German: Rachel
PAL Italian: Rachel
PAL Spanish: Rachel
JPN Japanese: レイチェル (same as in Mii data file)
KOR Korean: 레이첼 (Rachel)
CHN Taiwanese: Rachel
Source: Wii Sports Resort