David is the Seventh Animorph. He found the Blue Box that Elfangor used to give the Animorphs there power. When Marco saw Him with the box, He asked if He could sell it to Him. David refused and wanted to sell it in the internet. He posted it on the web and Visser Three emailed Him. Visser later came to David's house to claim the box, but the Animorphs were already their. After they battled Visser, David fell unconsious. Then the Animorph decided to let David join the team. At first He was loyal, but soon He tried to trap the others. Later, the others trapped Him and allowed Him to be stuck as a rat. But Billy and I found David, the rat, walking on the beach. He told Me about His situation and we took Him to the Witches Council. They eventually turned Him back into a human and He had to tell the other Animorphs He was sorry for giving them such a hard time. The others accepted His apology and now David is part of the team again.