This article explains how to change your gender in Knives Out. It covers the steps for changing gender and gender changes for couples, so use it as a reference.
Table of Contents
How to Change Avatar Gender
Changeable Using an Item!

Gender cannot be changed from the settings screen; it is possible by using a Gender Change Card from the Warehouse. Gender Change Cards can be purchased by going to "Shop > Treasures". They can be bought for 9,000 Silver Coins or 900 Diamonds, making them relatively easy to purchase.
Gender Change Card Price
Card | Price |
---|---|
![]() | ![]() ![]() |
Changing Icon Does Not Change Gender

Gender does not change even if you change your icon. Only the icon displayed on the friend list and results screen changes, so avoid purchasing icons for the purpose of changing gender.
How to Change Profile Gender
Change Profile Gender

In addition to the gender that changes the character's appearance, there is also an item to declare the player's own gender that can be set in the profile's personal information. Profile gender can be changed from "Edit > Personal Information".
Only Opposite Genders Can Become Couples
To become a couple, such as lovers or married, your profile genders must be different. Be aware that once changed, you must wait at least one day before changing it again.
Is Gender Change Possible After Coupling?

Players who have formed a romantic relationship can become a couple in Knives Out. However, their profile genders must be male and female, and while the relationship is a couple, changing profile gender is impossible.
Avatar Gender Change is Possible

▲× Profile same gender, ○ Avatar appearance same gender
Profile gender cannot be changed, but avatar gender can be changed with a "Gender Change Card".
What Happens to Clothes After Gender Change?
They Do Not Disappear

Outfits do not disappear even if you change the avatar's gender. The warehouse displays the outfits owned for each gender, and if you revert to the original gender, you can use the outfits collected up to that point again.
Changing Outfit Gender

Skins that support gender change can have their gender changed using Outfit Tickets. The type of Outfit Ticket required depends on the rarity of the outfit whose gender you want to change.
How to Hide Gender Display
The gender mark displayed before the character name cannot be hidden after setting the gender. If you do not want to display your gender, it is best to leave the gender unselected. Note that once a gender is selected, it cannot be reverted to an unselected state.
Which is Recommended, Male or Female?
Is Female More Advantageous?

Female characters have slightly slimmer body lines, so the forward visibility on your screen is marginally higher. Abilities such as height and movement speed, as well as hitboxes, are the same, so choose according to your preference.
Are Male Characters Taller?

Looking at the couple display, males appear slightly taller, but in matches, they are the same height.