Since i already made a guide on how to edit Growth Rates in BSFE with a Hex Editor, i tinkered around with BSFE modding some more and figured out how to edit every characters base stats! So heres a short tutorial on how to edit them (i used HxD)
The bases are stored as Hex Numbers in the order: Attack / Skill / Speed / Luck / Defense / Resistance / HP / Weapon Level
Attack, Skill, Speed, Defense and Resistance take Class Bases into account (so its class base + personal), meanwhile Luck, HP and Weapon Level do not, so if you want 8 Luck you just need to type 08 into the respective spot.
Heres a compiled list of every characters Hex-String representing their bases. To search for stats in HxD you press Ctrl+F go to Hex Strings and enable searching in all directions.
Nyna (Both Episodes)
01 01 05 12 02 00 12 0E
Midia
00 06 02 07 01 00 14 0A
Dolph
02 04 05 03 02 00 15 07
Macellan
02 03 03 04 01 00 14 05
Tomas
02 03 01 04 00 00 14 09
Boah
01 05 06 04 03 00 16 0C
Minerva
01 01 05 06 02 00 16 0A
Hardin
04 05 04 03 02 00 19 09
Catria
00 01 05 07 01 00 13 0A
Est
00 00 04 0A 00 00 10 07
Wolf
00 00 01 05 00 00 16 06
Roshea
01 03 03 04 01 00 16 07
Frost
00 00 08 01 03 00 16 0A
Rickard
03 01 02 00 02 00 10 02
Lena
00 06 05 08 02 00 10 07
Navarre
01 01 01 08 01 00 14 09
Castor
01 00 00 03 00 00 15 06
Dice
08 07 09 05 04 00 1E 08
Malice
02 03 04 07 04 01 16 0A
Camus
05 07 09 0A 06 00 26 0E
Roberto
03 05 03 08 01 00 17 0A
Belf
05 0B 08 06 04 00 1B 0D
Reiden
05 08 07 08 03 01 1A 0D
If you have any questions, feel free to ask!