Pearl is a standard gauge tender engine that works in the Crystal Mines on Crystal Island.
Pearl is based on a Wheatley E7 Class 2-4-0 locomotive.
Pearl is painted white with her name on her tender in light blue. She also has a round white gemstone on her tender.
Pearl is a perfectionist with a wide range of knowledge on many topics who values organization with a penchant for symmetry. Despite her intelligent and calm demeanor, Pearl is easily flustered and overwhelmed when confronted by something she does not understand or when her plans fail, which can lead to Pearl making rash decisions or speaking without thinking. Despite her perfectionism, Pearl has low self-confidence.