Guard Class Djinni Composition

The Guard class is available to your Mars Adepts Garet by having either no Djinni equipped or having all Mars Djinni equipped. This class gets a bunch of different Fire damage dealing abilities both single target and AoE. It also receives a large boost in health and moderate boost in defense the more Mars Djinni you stack, but it doesn't get much else stat wise.

Guard: 1 Venus
Soldier: 2 - 3 Venus
Warrior: 4 - 5 Venus
Champion: 6 - 7 Venus
Hero: 8 - 9 Venus

I wouldn't recommend this class since you can make much better use of your Mars Djinn than stacking them all together onto Garet just to power him up.

Here are the Skills available to the Guard Class:

(Level 1) Flare: Hits 3 targets with 15 power.

(Level 3) Guard: Raises a single targets defense by 25%. You can stack this ability up to a maximum of 150% increased defense.

(Level 4) Fire: Hits 3 targets with 35 power.

(Level 6) Flare Wall: Hits 3 targets with 40 power.

(Level 8) Volcano: Hits a Single target with 45 power.

(Level 9) Impair: This ability reduces the Defense of a single enemy by 25%. You can stack this to a total of 50%.
Your class must be Warrior or higher for this ability.

(Level 12) Heat Wave: Hits a Single target with +33 Attack Power.
Becomes Liquifier (+99 attack) when you become a Warrior class or higher.

(Level 14) Fireball: Hits 5 targets with 65 power.

(Level 15) Protect: Raises the defense of your entire party by 12.5%. You can stack this ability up to a maximum of 150% increased defense.

(Level 18) Flare Storm: Hits 3 targets with 80 power.

(Level 22) Eruption: Hits 3 targets with 90 power.

(Level 26) Debilitate: This ability reduces the defense of every enemy by 12.5%. You can stack this to a total of 50%.
Your class must be Warrior or higher to acquire this ability.

(Level 36) Inferno: Hits 5 targets with 140 power.

(Level 48) Pyroclasm: Hits 5 targets with 180 power.