Answer
The response "One Fat Englishman" correctly identifies the Kingsley Amis novel featuring the character Roger Micheldene. This novel, published in 1963, follows the story of Micheldene, a middle-aged Englishman who embarks on a hedonistic journey through Europe in search of culinary delights and amorous adventures. Amis's satirical and humorous writing style shines through in this exploration of themes such as aging, masculinity, and cultural differences.