Complex sentence: However minor and brief Grandpa Gohan's appearance as a charcter may be, he is easily the most important character in the entire Dragonball saga, for he is instrumental in the formation of our hero's warm hearted, kind and forgiving personality.
Split into simpler sentences: However minor and brief Grandpa Gohan's appearance as a charcter may be, he is easily the most important character in the entire Dragonball saga, for he is instrumental in the formation of our hero's personality. He is instrumental in the forging of Goku's warm hearted, kind and forgiving personality.