NewFissy is one of the developers in Adopt Me!. He is also a NPC in the hallway of the School. In his NPC dialogue, he welcomes players to the school and says that he is one of the teachers there. He also tells players that his name is NewFissy, but they can call him Mr. Fissy. He says that he earned that title by scripting himself to be the principal, but he is only joking. He is the tech expert in the game, and manages the coding.

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