McDull is a male pig who can be distinguished by a birthmark on his right eye. He has a heart of gold, but he isn't very smart and ordinary in every way; nevertheless, he has many dreams. However, every time he tries, he fails; he is disappointed, but tries again, exploring other dreams. In this way he creates his own colourful world. He lives his life simply and naturally. He is not perfect, but his attitude towards life, namely of never giving up, makes him a popular character。

The name McDull actually has a story itself. When Mrs Mak was going to give birth to McDull, she saw a magical plastic basin (pronounced roughly as "dull" in Cantonese) flying over her head. Believing it a sign from the gods, she named her son as "Dull"。
麥兜系列主要人物中英文名對照：
麥兜 McDull
麥嘜 McMug
麥太 Mrs. Mak(麥譚玉蓮 Mak Tam Yuk Lin)
麥炳 Mak Bing

大愛麥兜！！不知道有沒有T友和我一樣喜歡麥兜啊~~想當年我和同學張嘴閉嘴“雞包紙、紙包雞”“馬爾代夫……椰林樹影，水清沙幼……”，不亦樂乎~~最近新的麥兜又要上演了呢~~我的小心臟美滋滋的~~那陣我弟弟妹妹、同學、秦蘇珊英語的好朋友過生日，我幾乎都送畫著麥兜的東西，到最后我同學都無奈了，哈哈~~他為什么叫麥兜呢？相信看過動畫的人都知道，但是可能也有的人沒看過，為了讓麥兜被更多人知道，我給大家介紹一下~~下面還有找來的英文喲！

麥兜是一只右眼上有個胎記的小豬。傻乎乎的，過著平凡而又溫暖的小生活。每一次他嘗試著達成自己的理想，都會失敗；他會感到失望，但依舊進取，追逐著自己其它的夢。生活十分單純，雖不完美，卻積極向上的生活態度和永不放棄的精神，就像一只小蝸牛，爬的雖然慢，但是卻一點一點的爬，沖著自己的小幸福努力~
麥兜名字的由來有一個故事。麥太臨盆去醫院準備生麥兜的時候，她看到了一只神奇的塑料盆(粵語中叫做“膠兜”)從她頭頂飛過。由此她向塑料盆許了一系列的愿望，希望將來的兒子能很聰明、讀書好，長得帥，像梁朝偉或者周潤發，還有運氣要好，最后塑料盆終于落地。麥太認為這是老天爺傳遞的異象，而麥膠這個名字不好聽，于是決定取名麥兜。
麥太也是很可愛的，哈哈