Thank you so much! For a test.. Here:
R.BUSTER and all the other weapons font is stored uncompressed in the ROM.
Someone once helped me out. Now, I understand.
For example, considering R. BUSTER, their tilemap bytes are located at offset $8184B7 (SNES Address). Here they are: 0C 01 81 DE 34 ED 34 C9 34 E9 34 DF 34 E8 34 CC 34 DE 34.
R - DE
M - DA
and for Forte:
F - CD
B - C9
I am happy now.