Book five gives the best answer! After he were kicked by that big monster( the enemy of the gods, Ive forgotten the name) He played on the party pacman. When he told Percy why the god fight against the monster, you can see that dionysus can be a honest person and a helpful father! Big in the camp he is against anything !
Dionysus means "God of Nysa", Nysa was the birthplace of Dionysus.
Dionysus did not die.
Dionysus did not kill Perseus!
Dionysus's mother is Semele
Dionysus was the Greek god of wine.
Dionysus - bacchus
Zesus was the Father of Dionysus.
Dionysus was the Greek god of wine.
Dionysus married Ariadne
Dionysus was born in Nysa.
Dionysus was the god of wine