Dudley Dursley is the only son of Vernon and Petunia Dursley of number four Privet Drive, Little Whinging, Surrey. Dudley was born on June 23, 1980 [P1] [see Timeline: Dudley Dursley]. As a baby, he was chubby and had blond curls. He screamed for sweets, had tantrums which involved throwing his cereal at the wall, resembled a large pink beachball wearing different colored bonnets, and on November 1, 1981 , he learned the word won't.
達力·德思禮 是家住薩裏郡小惠金區女貞路4號的弗農和佩妮·德思禮的獨生子。達力出生在1980年6月23日。在他小的時候，他就壹副胖圓的樣子，有著金色的卷發。他會尖叫著要糖吃，會發脾氣而把早餐的麥片扔到墻上，他看起來好像壹只戴著五顏六色嬰兒帽的粉紅色的大海灘氣球。在1981年的11月1日，他學會了單詞“絕不”。
Ten years later, Dudley was still chubby and had blond curls. His personality hadn't changed much either. There are pictures on the mantel of number four Privet Drive of him riding his first bicycle, riding a carousel, playing a computer game with his father, and being fawned over by his mother. He hates exercise unless it involves punching someone. He (has) a large pink face, not much neck, small watery blue eyes, and thick blond hair (PS2). Dudley pretends to cry when he wants to get his way, a tactic that works very well with his mother, who dotes on him.
十年以後，達力仍然是圓圓胖胖，有金色卷發。他的性格也沒變多少。女貞路四號的壁爐架上擺著他騎第壹輛自行車的照片，在博覽會上乘坐旋轉木馬的照片，跟父親玩電腦遊戲的照片，以及被母親擁著親吻的照片。他討厭做運動，但是打人除外。“他有壹張粉紅色的銀盤大臉，脖子很短，壹對水汪汪的藍眼睛，濃密的金發。”（魔法石，第2章）達力想達到某種目的的時候總是裝哭，這招對付他的母親非常有效——他的母親很溺愛他。
Dudley's best friend is Piers Polkiss, a scawny boy with a face like a rat. Piers holds other kids so Dudley can slug them. In primary school, and on holidays later on, Piers was part of Dudley's gang, which also included Dennis, Malcolm, and Gordon (PS2, PS3, OP1). Because Dudley was the biggest and stupidest of the lot, he was the leader. The other kids at primary school didn't like to disagree with Dudley's gang, whose favourite sport was Harry hunting.
達力最好的朋友是皮爾·波奇斯。他是個有壹張老鼠壹般的臉，瘦骨嶙峋的男孩，。達力去揍其他孩子的時候，皮爾負責按住他們。在小學裏，還有在接下來的假期中，皮爾都是達力幫中的壹個。他們這夥人還包括丹尼，莫肯，以及戈登（魔法石，第2、第3章；鳳凰社，第1章）。因為達力是他們中最強壯，最愚蠢的，他是頭兒。小學的其他孩子都不敢違背達力幫。他們最愛的活動是“追打哈利”.