Lieutenant Commander Data

• Android created by Dr Noonien Soong on the Omicron Theta colony; second officer and operations officer; aspires to be more human. (S01E13)
• Has a 'brother', Lore, an earlier and emotionally unstable prototype (Datalore S01E13, Brothers S04E03, Descent S06E26 · S07E01).
• Declared a sentient being with rights, not Starfleet property, in a hearing brought by Commander Maddox (The Measure of a Man S02E09).
• Built a daughter, Lal, who died of cascade failure (The Offspring S03E16).
• Meets his creator Soong, who built him an emotion chip; Lore steals it (Brothers S04E03) and Data recovers it in Descent S06E26 · S07E01.
• Discovers his 'mother' Juliana Tainer is herself an android (Inheritance S07E10).
• Owns the cat Spot (S04E25); paints, plays violin (S02E03), writes poetry ('Ode to Spot') (S06E05), performs Sherlock Holmes on the holodeck with Geordi (S02E03).
• Cannot use contractions (a plot point in Datalore S01E13 and Future Imperfect S04E08); develops a dream program (Birthright S06E16 · S06E17, Phantasms S07E06).
• Commands the USS Sutherland in the blockade of the Klingon civil war (Redemption II S05E01); takes on multiple personas in Masks S07E17.
• Brief intimate encounter with Tasha Yar under the polywater intoxication (The Naked Now S01E03).

• Lieutenant Commander Geordi La Forge: best friend (Memory Alpha: Geordi La Forge · Memory Alpha: Data)
• Lore: brother (Memory Alpha: Lore · Memory Alpha: Data)
• Dr Noonien Soong: creator and 'father' (Memory Alpha: Noonien Soong · Memory Alpha: Lore)
• Juliana Tainer: 'mother' (Memory Alpha: Juliana Tainer · Memory Alpha: Data)
• Lal: daughter (Memory Alpha: Lal · Memory Alpha: Data)
• Lieutenant Natasha 'Tasha' Yar: intimate encounter, kept her holo-image (Memory Alpha: Natasha Yar)
• Ensign Jenna D'Sora: girlfriend briefly (Memory Alpha: Jenna D'Sora · Memory Alpha: Data)
• Dr Katherine Pulaski: doctor who dismissed him as a machine at first, then respected him (Memory Alpha: Data · Memory Alpha: Katherine Pulaski)
• Professor James Moriarty: adversary (Memory Alpha: James Moriarty (hologram))

One cell per episode in broadcast order; darker means more lines, an outlined cell is an appearance without dialogue. Hover for the episode, click to open it.

Episodes where the character appears without dialogue, and how we know.

• Data's Day (S04E11): 137 lines
• Time's Arrow, part 1 (S05E26): 122 lines
• Inheritance (S07E10): 119 lines
• In Theory (S04E25): 113 lines
• Force of Nature (S07E09): 101 lines