Bring out the list of characters and their functions in the novel "Ant Hills of the Savannah" in Chapter One.

1. His Excellency, President for Life, Field Marshal Al Hadji Doctor Idi Amin Dada, VC, DSO, MC, Lord of All the Beasts of the Earth and Fishes of the Seas and Conqueror of the British Empire in Africa in General and Uganda in Particular - The President of the fictional African country of Kangan, known for his authoritarian rule and extravagant titles.

2. Chris Oriko - The Minister of Information in Kangan and a close friend of the President. He is a key character in the novel, as he struggles to navigate the political landscape and maintain his integrity.

3. Ikem Osodi - The editor of the National Gazette and a close friend of Chris. He is a vocal critic of the government and plays a key role in the unfolding events of the novel.

4. Beatrice Okoh - The girlfriend of Chris and a university lecturer. She is a strong and independent woman who challenges the traditional gender roles in Kangan.

5. Sam - A young man who works as a driver for Chris and Ikem. He provides a different perspective on the political situation in Kangan.

6. Major Sam - A military officer who is loyal to the President and plays a role in the suppression of dissent in Kangan.

7. Elewa - A young woman who works as a maid for Chris and Ikem. She represents the struggles of the working class in Kangan.

These are the main characters and their functions in Chapter One of "Ant Hills of the Savannah" by Chinua Achebe.