Persona Fusion and Skill Cards are crucial for strengthening Joker's Personas and customizing your team's abilities. These systems are managed within the Velvet Room.

Persona Fusion:
Fusion allows you to combine two or more Personas to create a new, more powerful one. There are several types of fusion:
- Basic Fusion: Combine two Personas to create a new one. The resulting Persona's level is determined by the average level of the fused Personas, plus a bonus from your Bond skill 'Fusion Expert'.
- Advanced Fusion: Specific combinations of three or more Personas are required to create unique, powerful Personas. These are often tied to specific requests or story progression.
- Fusion Alarms: Occasionally, a 'Fusion Alarm' will trigger. During an alarm, fusions have a higher chance of inheriting more skills, gaining bonus stats, or even creating 'Accident' Personas with unique properties. Be cautious, as too many accidents can lead to a 'Fusion Accident' where you get a random, often weaker, Persona.
When fusing, you can select which skills the new Persona inherits from its parents. Prioritize skills that cover elemental weaknesses or provide useful buffs/debuffs.
Skill Cards:
Skill Cards are consumable items that teach a specific skill to any Persona. They can be obtained from various sources, including:
- Chests: Found throughout Jails.
- Requests: Rewards for completing certain side quests.
- Sophia's Shop: Purchased from Sophia's online shop.
- Persona Drops: Some Shadows may drop Skill Cards upon defeat.
Skill Cards are invaluable for customizing your Personas, allowing you to patch up elemental weaknesses, add healing abilities, or give a Persona a powerful attack skill it wouldn't normally learn. Use them strategically to create versatile and powerful Personas for Joker.