Every monster needs it's mate. luckily for our protagonist, he will encounter many women he sees and he will grow a massive harem full of mates to help with his heat cycle, mating season, and always love him no matter what! Apparently, (Y/N) won't even realize it.

Members of (Y/N)'s harem:

RWBY:

Ruby Rose

Summer Rose

Yang Xiao Long

Tea Xiao Long (Fem Taiyang)

Quill Branwen (Fem Qrow)

Raven Branwen

Weiss Schnee

Winter Schnee

Whitney Schnee (Fem Whitley)

Willow Schnee

Blake Belladonna

Kali Belladonna

Kira Belladonna (Fem Ghira)

Jane Arc (Fem Jaune)

Saphron Cotta-Arc

Terra Cotta-Arc

Lei Rin (Fem Rin)

An Ren

Nora Valkyrie

Pyrrha Nikos

Coco Adel

Velvet Scarlatina

Vixen Alistair (Fem Fox)

Yasuka Daichi (Fem Yatsuhashi)

Star Wukong (Fem Sun)

Neptunia (Fem Neptune)

Caroline Winchester (Fem Cardin)

Rachel (Fem Russel)

Skyla (Fem Sky)

Danielle (Fem Dove)

Glynda Goodwitch

Penny Polendina

Jenny Ironwood (Fem James/ Ironwood's sister)

Roma Torchwick (Fem Roman)

Neopolitan

Cinder Fall

Emerald Sustrai

Mercy Black (Fem Mercury)

Hazel (Fem Hazel)

Salem (She will be in her former human self because Cortex drained her powers of grimm along with the grimm pools. (Y/N) decided to be on her side no matter what.)

Professor "Doctor" Bethany Oobleck (Fem Oobleck)

Professor Peach

Anna Taurus (Fem Adam/Adam's sister. She has a soft side for (Y/N).)

Sienna Khan (Ever since (Y/N) escaped with her and other witnesses, she fell in love with him.)

Ilia Amitola

Scarla David (Fem Scarlet)

Salvia Ayana (Fem Sage)

Nebula Violette

Dew Gayl

Gwen Darcy

Octavia Ember

The Malachite Twins

The Four Season Maidens (Spring, Summer, Fall & Winter.)

Lisa Lavender

Olivia Pine (Fem Oscar)

Reese Chloris

Arslan Altan

May Zedong

Amber

Ciel Soleil

Neon Katt

Vernal

Trifa

Jinn

Tock

Elm Ederne

Harriet Bree

Fiona Thyme

Joanna Greenleaf

Robyn Hill

May Marigold

Deery

Fliona Coal

Carmine Esclados

Paige Nikos

Atlas Moms

Lil' Miss Malachite

Alisa

Alison

Cala Maria (Young)

Shami Ebi (Fem Clover)

Marra (Fem Marrow)

Corsa (Fem Corsac)

Fenneca (Fem Fennec)

Gretchen (Fem Hazel)

Kai Zeigler (Fem Kai)