How do I do this?

Go to the in-game Shop or the shop on the game website for DOFUS and WAKFU:

Transferring a character from one account to another happens instantly and can't be canceled.

What can be transferred?

Can be transferred	Cannot be transferred
all items in your inventory, including your merchant mode; items linked to the character; items linked to the account that are present in your inventory; all equipped items, including your mount; your kamas; your guild and your alliance; and your achievements.	Your house Your Haven Bag (its themes and extra rooms) and the contents thereof Your items in Marketplaces Any mounts in your stable Your bank Your Ogrines Any active subscription on the original account

Items equipped on the character cannot be transferred. All your items must be deposited in your character's inventory.

Can be transferred

Cannot be transferred

Subject to certain conditions:

Your Sidekicks, if they are removed from your Sidekick interface and put into your inventory
Equipment on your Sidekicks, if it is put in your inventory
The contents of your account chest, if these items are placed in your inventory
Equipped items cannot be transferred. All your items must be put in your character's inventory

Company leader status, if applicable
Your account chest
The character’s sidekicks
Pending items in your gift interface
Your friend list
Pending rewards
The Ability, Spells or Extra Equipment pages that you have purchased and unlocked

have an active subscription record totaling over 4 months,
be associated with the same first and last name,
and belong to the same community on a single server.
If you're using an extra security feature (Authenticator or Shield), you must be able to authenticate both accounts.