Taka and Mufasa sometimes hanged out with Sarabi and Sarafina . Sarafina and Scar liked each other and they offen played together . Ahadi chose mufasa to be the new king . Taka was sad and anrgy the cubs didn't play with each other much .
This shows the fact that the cub is rather genderless without a official name. If any fan of TLK feels that Fluffy is Kopa then they must ignore the sequel and the characters (Kiara, Zira, Kovu, Nuka and Vitani) from it.