![2boys 2koma ;) arms_up bad_id bad_twitter_id beard bow check_translation closed_eyes collarbone comic commentary d.va_(overwatch) disneyland facepaint facial_hair from_behind furrowed_eyebrows goatee hair_bow hair_ornament hair_tie hanzo_(overwatch) happy kkangcheol korean_text long_hair mccree_(overwatch) monochrome multiple_boys mustache one_eye_closed open_mouth overwatch polka_dot polka_dot_bow ponytail shirt short_hair smile sweatdrop translation_request upper_body whisker_markings rating:s score:2 post #2412632](/cdn_image/preview/34/ec/34ec787c5a096468631ee4fc27b99f99.jpg)
A serious-minded person is put into non-serious situations. (also includes characters that simply look serious)
Like the trope of the same name, these pictures present someone or something of incredible badass, coolness, or charisma, but all of that is made kind of funny by a cute or silly action or object. Despite this, they maintain a completely unamused look on their faces.
Don't get this confused with "Badass Adorable" where the character is drawn looking awesome in a cute form. However, they can possibly overlap.
Put it simply:
'Baby Batman' - Badass Adorable
'Batman & Baby' - The Comically Serious