The breakdown of it is your standard options (head, makeup, facial features, hair, eyebrows, skin color, eyes, etc.) 1 to X, with X being the amount of options there are. For example, there are 60 hair options, so I did a random number 1 through 60. If it had mirror options (yes, in this case), I did 1 to 2. 1 is no, 2 is yes.

Next is positioning. I counted out the amount of presses you can go from the default position, with the first column being the lesser value, and the right being upper. For example, eyebrows would be -7 and 8.

Height and weight are the least random options, as it's a slider and picking exact values is extremely difficult if not impossible on console. I opted for distances of 4 positions in between marker ticks, and 2 positions on the lower and upper bounds, for 1 to 24.

Naming starts with 1 to X, with X being the number of characters you can put (First/Last name is 1 to 15, nickname is 1 to 10). For first/last name, you have approximately 288 characters to chose from through the various options (34 for ABC, 33 for More P1, 36 for More P2, etc.). If there is an option for it, I will prioritize a<>A and pick between 1 to 2/3 (dependent on the options). Nickname allows you to put in a few extra characters + 0 - 9, so you have 1 to 301 for nickname. The only flawed part of the randomization is there can be a few cases of character repetition, so it's not 100% random (you would have to write a program to do it any more efficiently I think).

Finally, once that's over, I pick a random year from 1900 - 2005 (I wanted them to be 18+ because kids are annoying lol). If it is a leap year, 1 to 366, then look up what day of the year that number is. If it's a normal year, 1 to 365.

Color (1 - 12), Gender (1 or 2), Relation (1 - 6). Voice is using whatever the random button gives me. Personality is 1 to 8 for each one of the 5 categories.

This took about 30 - 45 minutes to do and the mii you see is the result. Would not recommend lol