Complex sentence: At times, he would fight with his brothers as well, though underneath the gruff surface he was warm and caring, had a fun-loving carefree side and a great sense of humor, and loved his family deeply.
Split into simpler sentences: At times, he would fight with his brothers as well. Underneath the gruff surface, he was warm and caring, had a fun-loving carefree side and a great sense of humor, and loved his family deeply.