All classes level 300 and above can ride a Fenrir.

Repair and resurrection:

Fenrir durability will decrease when damaged.

Repairing can be done by using Jewel of Bless.
If repairing fails, the Horn of Fenrir will remain, however, the Jewel of Bless used will disappear.
Attacking:

Plasma storm can only be used when Fenrir is equipped. (Mana 50, AG 20)

Plasma storm will not damage any other characters except for the target during PvP.

Can damage characters on the same team during Castle Siege.

Fenrir Combination:

Stage 1:

Talk with the Chaos Goblin in Noria at coordinates 180, 100.
Select the option Regular Combination.
In the 8 x 4 Chaos storage area, place:

One (1) Jewel of Chaos

Twenty (20) Splinter of Armor

Twenty (20) Bless of Guardian

Appropriate amount of Zen needed
Success rate is 70%.
After confirming the success rate, press the Combining button.

If the combination succeeds, a Piece of Horn will be created.
If the combination fails, all items and zen used in the combination are lost.

Stage 2:

Talk with the Chaos Goblin in Noria at coordinates 180, 100.
Select the option Regular Combination.
In the 8 x 4 Chaos storage area, place:

One (1) Jewel of Chaos

Five (5) Piece of Horn

Ten (10) Claw of Beast

Appropriate amount of Zen needed
Success rate is 50%.
After confirming the success rate, press the Combining button.

If the combination succeeds, a Broken Horn will be created.
If the combination fails, all items and zen used in the combination are lost.

Stage 3:

Talk with the Chaos Goblin in Noria at coordinates 180, 100.
Select the option Regular Combination.
In the 8 x 4 Chaos storage area, place:

One (1) Jewel of Chaos

One (1) Broken Horn

Three (3) Jewels of Life

10 million Zen
Success rate is 30%.
After confirming the success rate, press the Combining button.

If the combination succeeds, a Horn of Fenrir will be created.
If the combination fails, all items and zen used in the combination are lost.

Upgrading Fenrir:

Talk with the Chaos Goblin in Noria at coordinates 180, 100.
Select the option Regular Combination.
In the 8 x 4 Chaos storage area, place:

One (1) Jewel of Chaos

One (1) Horn of Fenrir

Five (5) Jewels of Life

One (1) or more Level 4 (minimum)+Option 4% (minimum) Weapon(s) to create a Destruction Fenrir

One (1) or more Level 4 (minimum)+Option 4% (minimum) Armor(s) to create a Protection Fenrir

Appropriate amount of Zen needed
After confirming the success rate, press the Combining button.

If the combination succeeds, a Horn of Fenrir+Destruction or Horn of Fenrir+Protection will be created.
If the combination fails, all items and zen used in the combination are lost.

Types of Upgraded Fenrir:

Black Fenrir -- Horn of Fenrir + Destruction (increase final damage)

Blue Fenrir -- Horn of Fenrir + Protection (absorb final damage)