Can be any stat, how many kills, how many stimpacks you used, hours played, your current SPECIAL or skills numbers.

Sandman kills, caps total, crafted items, amounts of different items collected and so on...

Susie Springs level 25, DT 0, HP 300.
S: 5 ( implant. )
P: 6.
E: 4 ( implant.)
C: 9.
I: 6,
A: 8 ( small frame. )
L: 6 ( implant. )

Skills that are used and role based..
Barter 100, guns 100, lockpick 69, melee 55, repair 75, speech 100, survival 50.
Perks: Abominable (1), animal control (3), animal friend (1), better criticals, black widow, bugstomper (3), camel of the Mojave, Cherchez la femme, comprehension, cowboy, day tripper, finesse, free radical, good natured, hand loader, lord of death, pack rat, ranger takedown, rapid relaod, search and mark, shotgun surgeon, small frame, spotter, weapon handling.

1 of my 9 characters: Courier 6 (40B13P) (Level 33 Messiah)
All I can remember (I don't have my Xbox 360 on):
SPECIAL: S-10 P-4 E-4 C-1 I-10 A-5 L-10
Skills:
Barter-?(but its low) Energy Weapons- 100 Explosives- 100 Guns- 100 Lockpick 100 Medicine-100 Melee Weapons- 100 Repair-? (its low) Science-? (its low) Sneak-? (its low) Speech-50 Survival-? (its low) Unarmed- 100 (So can basically handle any weapon and not have bad effects because my strength is 10 and all of my weapon skills are 100, yup, I'm beast)