There are 5 different character roles in the game.
Defender
Attacker
Healer
Supporter
Debuffer
1. Defender - The role of Tank in the team
2. Attacker - The main DPS of your team
3. Healer - Responsible for recovering HP to the team
4. Supporter - Responsible for applying buffs to ally
5. Debuffer - Responsible for applying debuffs to enemy