Gaster was a workaholic, his work was his pride and joy and he would put it first before anything that mattered, even if his life was on the line. His intelligence and power was unstoppable. Till you entered his life. He was more sweet towards you than the other residents in this universe and would sometimes put his work aside for you, and would hate to let this moment you two had be interrupted by either Chara, Frisk, or Alphys his assistant. He’s flirty, but holds his mannerism and seriousness