"I give all credit of this article to the Codename: Kids Next Door Wiki"
Numbuh Four (real name Wallabee Beetles) is one of the main children from Codename: Kids Next Dooras well as the shortest of the five. He is the hand-to-hand combat expert of Sector V and comes from Australia. His personality and slight dimwitted mind often gets him tricked or suckered. But despite this, he's got a strong sense of determination and never gives up in a fight. He hates all girly things, and fears swimming. Despite this, he has a hidden crush on fellow KND operative Numbah Three (or, at least, hidden to her). As an adult, he finally marries Numbah Three and actually attends medical school while being a few inches taller than her.