He was extremely aggressive towards Laura and called her names. In the Submission Reel, Laura said he throws tantrums 3 to 4 times a day. Stuart called him "the child from hell" and said was impossible to control, and that he feared for the safety of Tegan-Olivia and Diesel.
Laura and Stuart also taught Matthew kickboxing, and Jo feared that Matthew didn't understand appropriate limits to physical interaction due to this instruction.
He was introduced to a chill out chair to let out his anger when he lost his temper.
He was 5 years old when he appeared on Supernanny and is now 18 in 2018.