Mr Mandela is often referred to as âKhuluâ, which means great, paramount, grand. The speaker means âGreat Oneâ when referring to Mr Mandela in this way. It is also a shortened form of the isiXhosa word âTat'omkhuluâ for âgrandfatherâ.
I assume 'Pico' is a name. Boku refers to oneself (like 'watashi', 'ore', 'washi', etc.) like 'I' and 'no' indicates possession (for example, 'boku no inu' would be 'my dog' or 'dog of mine' (in reverse order since dog appears at the end in the Japanese sentence) since 'inu' is dog in Japanese).
Goku (å­« æç©º, Son GokÅ«) is the main protagonist of the Dragon Ball metaseries created by Akira Toriyama. He is the husband of Chi-Chi, father of two sons, Gohan and Goten, the grandfather of Pan, and later great-great grandfather of Goku Jr.