Bert Baxter (May 10, 1889- May 9, 1995) is an old man who befriends Adrian Mole through the Good Samaritan program, which Adrian joins in 1981. He is often described as rude, filthy and possibly senile, shown on one occasion where he believes that a Bible printed by 1956 (a fact unknown to Bert) saved his life during the First World War. He owns a vicious Alsatian called Sabre (who is eventually knocked down by a milk float in 'Adrian Mole and the Snall Amphibians') and was briefly married to a woman called Queenie.

Bert had worked with horses, and enjoyed talking with Pandora about her pony Blossom. During one of her break-ups with Adrian, Pandora is impressed with the care that Adrian shows to Bert, and agrees to become Adrian's girlfriend again.

Adrian Mole described him as a communist, a description which is often warranted, as he is shown to often read 'The Morning Star', a communist newspaper. Bert ate little but beetroot sandwiches and smokes woodbine cigarettes. Adrian cleans his flat, despite finding the smell disgusting.

Despite various health problems, Bert lived to be nearly 106 and died in a wheelchair accident. When sorting through Bert's belongings after his death Adrian finds an edition of George Orwell's *1984*, but "unfortunately somebody called Eric Blair had written his name in the front."