I may not have coded this right (I haven't tried installing the code yet) and I may have screwed up some of the creatures, but all of the gender errors should be (on the way to being) fixed.
COPY_EXISTING ANDRIS.CRE OVERRIDE // Andris (MAGE_MALE_HUMAN animation, AR1009: Ice Island)
BARESH2.CRE OVERRIDE // Baresh (CLERIC_MALE_HUMAN animation, AR1004: Ulgoth's Beard)
BARWLF.CRE OVERRIDE // Baresh
BEARPO3.CRE OVERRIDE // Polar Bear (All bears are male, AR1008: Ice Island)
BEYN.CRE OVERRIDE // Beyn (FIGHTER_MALE_HUMAN animation, AR1009: Ice Island)
CUCHOL.CRE OVERRIDE // Cuchol (CLERIC_MALE_ELF animation, AR1009: Ice Island)
CULT2.CRE OVERRIDE // Cult Wizard (MAGE_MALE_HUMAN animation, AR1003: Ulgoth's Beard)
DELSVIR.CRE OVERRIDE // Deslvirftanyon (THIEF_MALE_DWARF_LOW animation, AR1000: Ulgoth's Beard)
DOOMDUR.CRE OVERRIDE // Dwarven Doom Guard (FIGHTER_MALE_DWARF animation, AR0512: Durlag's Tower)
DRADEE.CRE OVERRIDE // Dradeel (MAGE_MALE_ELF animation, AR1505: Werewolf Island)
DRADEE2.CRE OVERRIDE // Dradeel (MAGE_MALE_ELF animation, AR2000: Werewolf Island)
GARAN.CRE OVERRIDE // Garan (THIEF_MALE_HUMAN_LOW animation, AR1009: Ice Island)
IKE.CRE OVERRIDE // Ike (THIEF_MALE_HUMAN animation, AR1000: Ulgoth's Beard)
JONDAL.CRE OVERRIDE // Jondalar (FIGHTER_MALE_HUMAN animation, AR2600: Candlekeep)
KING.CRE OVERRIDE // King (CLERIC_MALE_HUMAN animation, AR0506: Durlag's Tower)
LEAGGU1.CRE OVERRIDE // Merchant League Guard (FIGHTER_MALE_HUMAN animation, AR0308.BCS: Merchant League)
LEAGGU4.CRE OVERRIDE // Merchant League Guard (FIGHTER_MALE_HUMAN animation, AR0308.BCS: Merchant League)
LEAGGU5.CRE OVERRIDE // Merchant League Guard (FIGHTER_MALE_HUMAN animation, AR0308.BCS: Merchant League)
LEAGGU6.CRE OVERRIDE // Merchant League Guard (FIGHTER_MALE_HUMAN animation, AR0308.BCS: Merchant League)
LEAGGU7.CRE OVERRIDE // Merchant League Guard (FIGHTER_MALE_HUMAN animation, AR0308.BCS: Merchant League)
MARCEL.CRE OVERRIDE // Marcellus (MAGE_MALE_HUMAN animation, AR1009: Ice Island)
MTOWUB_A.CRE OVERRIDE // Commoner (PEASANT_MAN animation, AR1000: Ulgoth's Beard)
MTOWUB_B.CRE OVERRIDE // Commoner (PEASANT_MAN animation, AR1000: Ulgoth's Beard)
MTOWUB_C.CRE OVERRIDE // Commoner (PEASANT_MAN animation, AR1000: Ulgoth's Beard, AR1001: Ulgoth's Beard)
MTOWUB_D.CRE OVERRIDE // Commoner (PEASANT_MAN animation, AR1000: Ulgoth's Beard)
MTOWUB_E.CRE OVERRIDE // Commoner (PEASANT_MAN animation, AR1000: Ulgoth's Beard)
MTOWUBSC.CRE OVERRIDE // Commoner (STATIC_PEASANT_MAN_CHAIR animation, AR1001: Ulgoth's Beard)
MTOWUBSN.CRE OVERRIDE // Commoner (STATIC_PEASANT_MAN_MATTE animation)
MTOWUBST.CRE OVERRIDE // Commoner (STATIC_PEASANT_MAN_STOOL animation)
MTOWUBX.CRE OVERRIDE // Commoner (STATIC_PEASANT_MAN animation, AR1000: Ulgoth's Beard)
TARNOR.CRE OVERRIDE // Tarnor (FIGHTER_MALE_DWARF animation)
ULF.CRE OVERRIDE // Ulf (FIGHTER_MALE_ELF animation, AR0307.BCS: Merchant League)
WRITE_ASCII 0x275 ~1~ #1 // Gender = male
BUT_ONLY_IF_IT_CHANGES
COPY_EXISTING CLAIRD.CRE OVERRIDE // Clair De'lain (FIGHTER_FEMALE_HUMAN animation, AR0514: Durlag's Tower)
CULTT3.CRE OVERRIDE // Cult Assassin (FIGHTER_FEMALE_HUMAN animation, AR1003: Ulgoth's Beard)
CULTT4.CRE OVERRIDE // Cult Archer (THIEF_FEMALE_HUMAN animation, AR1003: Ulgoth's Beard)
DAESE.CRE OVERRIDE // Daese (MAGE_FEMALE_HUMAN animation, AR1504: Werewolf Island)
FTOWUB_A.CRE OVERRIDE // Commoner (PEASANT_WOMAN animation, AR1000: Ulgoth's Beard)
FTOWUB_B.CRE OVERRIDE // Commoner (PEASANT_WOMAN animation, AR1000: Ulgoth's Beard)
FTOWUB_E.CRE OVERRIDE // Commoner (PEASANT_WOMAN animation, AR1001: Ulgoth's Beard, AR1006: Ulgoth's Beard)
FTOWUBSC.CRE OVERRIDE // Commoner (STATIC_PEASANT_WOMAN_CHAIR animation)
FTOWUBSN.CRE OVERRIDE // Commoner (STATIC_PEASANT_WOMAN_MATTE animation)
FTOWUBX.CRE OVERRIDE // Commoner (STATIC_PEASANT_WOMAN animation, AR1000: Ulgoth's Beard)
ISLSIR.CRE OVERRIDE // Sirine Queen (SIRINE animation, AR1500: Werewolf Island)
JAHEIR4.CRE OVERRIDE // Jaheira
JAHEIR6.CRE OVERRIDE // Jaheira
LEAGGU2.CRE OVERRIDE // Merchant League Guard (FIGHTER_FEMALE_HUMAN animation, AR0308.BCS: Merchant League)
LEAGGU3.CRE OVERRIDE // Merchant League Guard (FIGHTER_FEMALE_HUMAN animation, AR0308.BCS: Merchant League)
LOVEM.CRE OVERRIDE // Love (FIGHTER_FEMALE_DWARF animation)
MARALE2.CRE OVERRIDE // Maralee (CLERIC_FEMALE_HUMAN animation, AR2000: Werewolf Island)
PHEOARCH.CRE OVERRIDE // Phoenix Guard (MAGE_FEMALE_HUMAN animation, AR0508: Ulgoth's Beard)
TRACEA.CRE OVERRIDE // Tracea Carol (MAGE_FEMALE_HUMAN_LOW animation, AR1002: Ulgoth's Beard)
WRITE_ASCII 0x275 ~2~ #1 // Gender = female
BUT_ONLY_IF_IT_CHANGES
COPY_EXISTING APPAR.CRE OVERRIDE // Skeleton (SKELETON animation, AR0513: Durlag's Tower)
CRYPTCRA.CRE OVERRIDE // Crypt Crawler (CARRION_CRAWLER animation, AR0514: Durlag's Tower)
GHASTD.CRE OVERRIDE // Ghast (GHAST animation, TRPGHAST.BCS)
GRAEL.CRE OVERRIDE // Grael (GHAST animation, AR0514: Durlag's Tower)
HACK.CRE OVERRIDE // Hack (OGRE animation, TITACH.BCS)
PLYOGRE.CRE OVERRIDE // Ogre (OGRE animation)
SKELET.CRE OVERRIDE // Skeleton (SKELETON animation)
SPIDPHAS.CRE OVERRIDE // Astral Phase Spider (SPIDER_PHASE animation, AR0514: Durlag's Tower)
STALKE.CRE OVERRIDE // Invisible Stalker (DOOM_GUARD animation, AR0146: Baldur's Gate, AR0161: Baldur's Gate, AR0509: Durlag's Tower)
WRITE_ASCII 0x275 ~4~ #1 // Gender = neither
BUT_ONLY_IF_IT_CHANGES