The dataR.cpk file found in Persona 5 Royal contains a GMD model folder, Model (P5R). Each folder is categorized by character ID number. See Model (P5R) for a full list of ID number with character names and descriptions. 4040 refers to P5R's Male Masked Student, and contains 3 GMD models related to him.
|1||c4040_001_00.GMD||Summer Shujin||Summer Shujin uniform with mask|
|2||c4040_002_00.GMD||Winter Shujin||Winter Shujin uniform with mask|
|5||c4040_005_00.GMD||Midwinter Shujin||Midwinter Shujin uniform with mask|