The term "captain red ass" may be considered vulgar or offensive, so it is important to use more appropriate synonyms. Some possible alternatives include "stubborn leader," "inflexible commander," "rigid captain," or "unyielding boss." Other options could include "domineering chief," "authoritarian supervisor," or "dictatorial manager." It is always important to use language that is respectful and professional in the workplace, and to consider the feelings and sensitivities of others when choosing words to describe a person or situation. By using appropriate synonyms and avoiding offensive language, we can promote a more positive and respectful working environment.