Enorme mecha con estilo de esmoquin ensamblado en un hangar subterráneo

a massive, gundam style mecha, standing several stories tall, slender humanoid male in shape, gleaming white metal with a black pattern resembling an expertly tied necktie trailing from the neck to the abdomen, a large white beam cane is affixed to the mech's waist, a large, white piece of high tech armor resembling a white top hat is being lowered down onto the machine's head, the overall effect is a Tuxedo mecha/gundam, being assembled and serviced by a team of similarly well-dressed engineers, inside a large hangar, underground