You can customize your Warlock’s pet appearance in the Barber Shop in Fractures in Time.

Patch 10.1.5 adds many customization options for Warlock pets and you can adjust them by visiting the Barber Shop.

Similar to Dragonriding customization, you can adjust the appearance of your Warlock pets separately.

When you first visit the Barber Shop in Patch 10.1.5, you will see the icon of your character and your pets in the top right corner of the screen. There, you can select the pet you’d like to adjust and change its appearance.