Players can obtain new pets to help them fight with by either buying them from the Shopping Mall or finding their eggs after killing monsters. 12 Eudemons can be carried in the party list at any time. There are Eudemon warehouses situated in the first 3 cities and Market where up to 10 Eudemons can be stored in each one. Also, players can carry 6 unhatched eggs at any time. There are also special Eudemons that can only be obtained at certain events or have to be bought from other players.

At level 20 a Eudemon is able to evolve to a higher form and, depending on what type it is, can change its appearance. First evolution is important as it verifies the pets attributes, quality and initial statistics. Pets can also be used as minors in main attribute composition.

At level 40 a Eudemon can evolve again into its highest form by being placed in the evolution oven inside the in-game Market. Once again, its appearance may change depending on the Eudemon's type. This evolution is also important as the eudemons may obtain a special gift or even turn into a thunder race Eudemon (the rarest race). They also receive a unique ID.