The meaning of the name Atreyu is;
Origin: Unique (Ancient)
Meaning: "Bold Guardian"
Majestic: one who is virtuous and saintly
Personality: often does the unexpected
Genuine: his sincerity and honesty are praised
Style: begins new projects with his eyes open
Ability: shares knowledge with others
Character: a person of unmatched confidence
Sentiment: he strives to better himself
Physical: an able speaker