Okonkwo, as the central protagonist of this brilliant story, is introduced to us in the very first chapter. In particular, you might like to analyse the following quote and what it tells us about the character of Okonkwo. It begins by telling us about how Okonkwo first gained fame by beating the wrestling champion:
That was many years ago, twenty years or more, and during this time Okonkwo's fame had grow like a bush-fire in the harmattan. He was tall and huge, and his busy eyebrows and wide nose gave him a very severe look.
Clearly one of the most important aspects about Okonkwo's character is the fact that his fame has only grown in the intervening years since he first gained glory and prestige by triumphing over the Cat. In addition, his physical appearance indicates that he is a man not to be trifled with, and presents him as a rather stern and strong individual.