Following the tradition of the Megami Tensei series, he is a silent protagonist, where his personality is based upon the player's actions. Due to this, very little information is given about Serph apart being praised for his level-headed thinking and leadership ability, and he is a well-respected leader in his tribe, the Embryon.
The plot opens with the pod exploding and streaks of light shooting everyone present in the battlefield, leaving tattoo-esque markings on their bodies and transforming Serph and the others into demons. The members of the Embryon go berserk upon their transformations, lashing out and devouring any demon in their sight. Serph, in his demonic for, Varuna,, is seen eating demon flesh before the screen briefly shows a clear blue sky.
Powers and Stats
Name: Serph, Seraph, Leader
Classification: Embryon, Atma user, Demon
Powers and Abilities: Can transform into a powerful Demon named Varuna, who, via the Mantras, can gain various skills, wandering from: Superhuman Physical Characteristics, Elemental Manipulation, Healing, One Hit Kill, Soul Manipulation, Earth Manipulation, just to name a few
Speed: At least Superhuman movement speed, Immeasurable attack speed and reactions.
Lifting Strength: Immeasurable
Striking Strength: Multiversal+
Durability: Multiverse level+
Stamina: Possibly limitless.
Range: A few dozens of meters via his gun, much higher with spells.
Standard Equipment: His handgun, Mantras
Intelligence: High, known for being a near perfect Tactician at the Junkyard.
Weaknesses: Can't perform his most powerful abilities without his squad.
Note: Various of the strongest Demons appearing in Digital Devil Saga are considered "Solar Data", which can be interpreted as a "recording" of their power, it's unknown if its the copies display their full power.