Rappel: n. (French) Recall / Summon

The game Rappelz is named such because of its creature summoning feature.
You can tame, summon, raise, evolve and utilize the creature regardless of what job class you are.
This is an in-depth guide on creatures. Most of the data is translated from the Korean guide on Playforum and the guides are originally wrote by myself, to help the players get to know their creatures better and plan out which one would work best for their characters.
Special thanks to nevets1219, angelsarc, and Martigan who helped me with data and advice.

I. Skills
First, in order to use creatures, you need the appropriate skills. Any beginning job class (Guide, Rogue or Stepper) of all the race can learn these skills.

Creature Control: Allows you to control a creature. The higher level this is, the more creature slots you get. You can have up to 2 creature.
I would recommend to use one slot for a tamed creature and the other slot for a mountable creature.

Summon Creature: Summons the formed creature.

Creature Mastery: Increases the attack power of the summoned creature. The higher this skill is, the higher the increase in attack power.

Recall Creature: Recalls the summoned creature.

Creature Item Expertise: Improves the efficiency of unit cards applied to creatures. The higher this skill is, the higher the increase in the efficiency of unit cards.

Creature Taming: Tries taming the monster. You need the proper type of creature card of the corresponding target and it must be used on a target at full health.

II. Taming, Forming Summoning1. Get an empty creature card.
After you acquired the above skills, it is time to go out in the field and start taming the creature you wish to raise.
However, even if you have acquired the Creature Taming skill, without an empty creature card you cannot tame any creatures.
There are 4 different types of creatures - Basic, Common, Uncommon and Extra.
You can buy any basic cards (Pantera, rappelz rupees or Poultry) from the Merchant NPCs in any of the cities other than Trainee Island, but for the other rare cards, you must either hunt monsters or buy from other players.

2. Tame the right monster.
Once you have the right card of the creature you wish to tame, find the rappelz rupees you can tame for the creature (e.g. target any of the Roosters if you wish to tame a Poultry), and use Creature Taming skill on the monster. The monster has to be in full health, or it will not work.