Summoner

After the Corruption, people learned to guard from outer world using outer power, thus resulting the Vicious Summoners. They developed a method to resist outer monsters by summoing certain elements from monters? own bodies.

To prevent the repeat of the Apocalypse which resulted from the summoing of outer monsters, they trained themselves to almost immune to anger, sadness and other emotions. And therefore, no matter what kind of treatments they suffer in the communion, they can still concentrate on their missions.
Vicious Summoner Class Description by Stratis303
The Vicious Summoner as the name suggests summons creatures to aid him during his battles. There are two types of creatures he can summon.

These are Libido, the poisoning and cursing type monsters and the Beast summoning tree which are the elemental type creatures with skills in lighting, fire, and ice. There are a variation of both melee and long ranged creatures in each summoning tree. These creatures can be sent out on there own to face any enemy The Vicious Summoner puts them against.

The Summoner does not have as many skills as some of the characters and does not get them as frequently which is one of the downsides to the Vicious Summoner.

Though with the summoning skill comes the Summoner's weapon skills. Now, again there are two paths to choose from. These are commonly called The Twin Blade Summoner and The Staff Summoner.

The first is the Staff weapon skills. The staff skills consist of mainly magical attacks rather than attacking from a close range. Those wanting to choose this style of fighting should rather put into there Spirit as this ups your magic damage of your spells. The Staff Summoner's base skill is his Vicious Mastery. This both ups the magic damage of the character as well as puts the Vicious Summoner's poison resistance up. The Staff Summoner should not expect a fast paced attack but rather a lethal single attack from one of the Summoner's spells. These single attacks are all ranged so it is useful to kill the creatures before they get to close to The Summoner.

Next we have the Twin Blade weapon skills. This is for the more close quarter fighters. The Twin Sword Summoner should put most of his skill points in to his Strength as this will up his melee damage. The Twin Sword Summoner is a fast paced attacker who throws volleys of attacks at their enemies without allowing there enemies to attack back. This is extremely useful against both bosses and in a Player vs Player match. Using Twin Swords does not require that much Spirit because most of the skills used by a Twin Sword Summoner are cheap and quick to use. Though there is one catch and that is that the Summoner needs a certain amount of Spirit to use his Twin Swords and this goes up with every new weapon. One of the most important skill of a Twin Blade Summoner is his Twin Blade Mastery. This skill up the Summoner's overall attack which my seem simple enough but on the long run adds that very much extra needed damage.
Now there are his cosmos skills. These skills are an extension of the Summoner's Staff and Twin Blade skill trees. There is one Cosmos skill for each skill type. The Staff Type Cosmos Skill is Hell Burst. When this skill is used it releases hell onto the enemy hitting them 5 times with a lethal amount of damage. The other Cosmos skill is the Twin Sword type skill. This skill is called Vicious Mirror. When this skill is used it creates a "copy" of the Summoner which goes forth and attacks the enemy 5 times.

Overall The Vicious Summoner relies on hitting and not being hit himself. Whether he is using a Twin Sword to attack the enemy quickly and stop them from hitting him or his Staff to attack the Summoner's enemies from range and kill them before they even get near enough to deal damage. Even the summoned creatures can be used to block the enemy. The Vicious is overall a well rounded character with skills ranging from both combat through to spells and summoned creatures.