Tear Jerker: Sonic Adventure

  • The death of E-102 "Gamma" at the end of his story in Sonic Adventure. Though what really makes it is the music.
    • Gamma's death isn't all that sad, upon considering that the bird inside is finally free to be with its family. Although that's definitely touching.
      Amy: You managed to free them. Thank you. We are friends from now on. Now you and your brother can live together again.
      • The prison cutscene. The supposedly intimidating robot confronts Amy for the bird, after she refuses, and in desperation, actually begs him to let it go. Gamma starts feeling pain from his new found empathy, going berserk before letting them out of their cell and ordering them to escape. He slumps over the door switch, dumbfounded and guilt ridden at disobeying his master's orders, though Amy shows sympathy and offers him her friendship before leaving. Gamma's heartwrenching theme playing in the background helps none.
    • Keep in mind, the E-100 units in Sonic Adventure were essentially siblings. Gamma was forced to kill the only people he ever cared for — with the exception of Amy and his creator Eggman (who he probably saw has his father) — for the greater good of saving the birdies from a Fate Worse Than Death.
  • Speaking of Sonic Adventure music, Sadness is truly Exactly What It Says on the Tin.
  • Tikal's implied death.
  • Chaos. Once a peaceful soul who cared for Chao and befriended Tikal, Chaos eventually lost it after witnessing Pachacamac invading and slaughtering the very creatures he tried to protect. Driven over the Despair Event Horizon, he sought vengeance on the very Echidnas that had caused the catastrophe. Then he's sealed inside the Master Emerald to prevent him from harming anybody else, which means he spends 4000 years trapped in a cocoon of anguish and sorrow. Even Sonic sympathises with him.
    Tikal: He must be sealed in the Master Emerald now.
    Sonic: How can that help? It won't change how he feels inside will it? His heart will still remain in turmoil, and his anger just won't vanish! He'll just be trapped forever.