Superior Darkvision. You can see in dim light within 120 feet of you as if it were bright light, and in darkness as if it were dim light. You can't discern color in darkness, only shades of gray. Magic Resistance. You have advantage on saving throws against spells and other magical effects. Sunlight Sensitivity. While in sunlight, you have disadvantage on attack rolls, as well as on Wisdom (Perception) checks that rely on sight. Derro Madness. All derro suffer from a form of madness that most often manifests as mania and paranoia, but other mental afflictions and strange tics also commonly affect them. You can roll or pick from the table, or create your personalized minor form of madness.
Languages. Dwarvish, Undercommon, and one language.