Aerobic Al one of Henry's close friends and he is a sporty and fit boy in Henry's class. He is the fastest person in Ashton Primary School, the second being Moody Margaret. Aerobic Al is also the tallest in his class. As a result of this, he rejects eating sweets when he's training or practising for a running or sports competition (although he says it's because his dad won't let him eat them). When Henry offered Al a yummy gummy fuzzball in "Horrid Henry's Sports Day", he couldn't resist, as they are his favourite kind of sweets. He has also been known to be bent to 'debag' Henry as revenge for his debagging. He has a Black Country accent and is one of Henry's friends. He is a member of the Purple Hand Gang. He sits next to Sour Susan in Miss Battle-Axe's class, and has a habit of question both 'Cool!' and 'Not cool?'.