Sansfield is a fictional crossover character who serves as the main antagonist in Bad Monday Simulator, a popular 2022 Undertale fan game. Created by animator and content creator LumpyTouch, the character is a literal fusion of Sans the Skeleton from Undertale and Garfield the Cat. He resides in a peaceful, alternate dimension underground known as "Undergarf," where war does not exist and, most importantly, Mondays are entirely forbidden. Key Characteristics appearance: He retains Garfield's signature chubby, feline body shape but features short white fur, dull white ears, a thick tail fading to black, and Sans's iconic glowing blue pupil during combat. He dresses in Sans's casual attire: a blue hooded jacket, black shorts with white linings, and pink slippers.Personality: Matching both of his design origins, Sansfield is incredibly lazy, highly sarcastic, loves sleeping, eats heavily, and frequently speaks in puns. Depending on the game's multiple endings, Sansfield acts as a vengeful hero or direct opponent trying to protect his timeline and avenge his friends.Combat and Abilities. The boss fight mimics the mechanical difficulty of the original Sans fight in Undertale, spread across three distinct phases with unique attack variations. Gar-Blasters: A Garfield-themed twist on Sans's "Gaster Blasters," firing powerful energy beams across the screen. Telekinesis & Bone Attacks: He uses telekinesis to slam the player's soul around the combat box, interspersed with bone spikes, orange-colored hazards, and random household objects like pipes or lasagna. Ultra Field Form: In his most extreme phase, he can transform into a massive, terrifying skeletal beast featuring a prominent ribcage and Gaster Blasters serving as his shoulders.