Professor Stephen is a playable character in Mini World that can be unlocked with 120 Dress-up Cards.

Why would an old professor of the National Academy of Sciences appear in this wild land?

Professor Stephen's skill is named Erudite and requires 200 Explorer Hat shards to activate. This skill gives Rocks a chance to drop rare materials, ores and special blocks when broken by the player.

• Level 1: There's a 4% chance to find rare ores and materials when digging stones.
• Level 2: There's a 6% chance to find more rare ores, materials and special blocks when digging stones.