User blog comment:Linathan/Birthday Special: Q&A/Ask Linathan!/@comment-26053138-20150619160326/@comment-26140304-20150619160801

You know, I really don't know. It kind of clicked in my mind that I needed to do a series if I wanted to make good use of a Wikia account and I thought making Unit Spotlights would be fun. Then, as they grew more and more popular, I decided to compile them all into the Table of Contents.