Ilunga never gets taller because dwarfs never get taller!!!!! Chikito is not a dwarf,he was just a kid when Ferre got him from the slums. I don't know his age but i know Ilunga an adult and not a kid as you think.
I don't know if you've ever watched Nigerian movies,maybe you've come across these two faces,they are not kids either

The one in white vest is 36 year old Chinedu Ikedieze and he's married and the other fella with him is 32 year old Osita Iheme