Add this new BRRES ID file of 121 within the blue Arc file "char_bust_tex_lz77" inside your build's 
sc_selcharacter.pac file in order to put in CSPs.

For the Character's title name font, in the same file go to MiscData30 this time and add an
additional texture entry for this "MenSelchrChrNm.1211" PNG file.

For the Character select icon, in the same file go to MiscData70 this time and add an additional 
texture entry for this "MenSelchrFace.121" PNG file.

(for more information, check out Solaros's Smashboards guide on PMEX setup)