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Bowser Jr. first appeared in "Super Mario Sunshine", where he disguised as Shadow Mario and disrupted Mario's vacation with Princess Peach by painting the island of Isle Delfino with goop and then kidnapping her by framing Mario, after his father tricked him into thinking that Princess Peach was his mother whom he had to protect. Eventually he found out that Peach was not really his mother, but still wanted to get revenge on Mario. Bowser Jr. later appeared in "New Super Mario Bros.", in a role similar to Boom Boom from "Super Mario Bros. 3", as the boss of every tower, the midpoint in each of the game's worlds as well as in the final battle with his father. Bowser Jr. appears in "Super Mario Galaxy", aiding his father in battle, as well as having three worlds of his own. Alongside the Koopalings, Bowser Jr. re-appeared in the "New Super Mario Bros." sequel, "New Super Mario Bros. Wii", appearing on an airship. He also appears in "Super Mario Galaxy 2", in the same way as in the original "Galaxy". Bowser Jr. also appears in "New Super Mario Bros. U", "New Super Luigi U" and "New Super Mario Bros. U Deluxe" alongside his dad, the Koopalings, and Boom Boom.