Persona 3 and 4:Models
From Data Crystal
The RMD format is Atlus' model format for the Shin Megami Tensei games. Currently, the format is not very well documented. However, there are a few editors/viewers for the format.
RMD files are little endian.
|0x00||UInt32||Hex Value of F000F0F0, probably a identifier|
|0x00||UInt32||Name of animation entry|
|0x04||UInt16||Size of file, relative to 0xC|