Mariko appears (sings/talks) in the following miscellaneous CDs.

1995.07.21	Wrestle Angels Original Fighting Story (NACL-1184)	Talk
1996.08.21	Doukyuusei PC Engine Original Soundtrack (NACL-1227)	Talk
1997.01.21	McCow's Special "Ninki Seiyuu Vocal Shuu" (NACL-1271)	Song