User blog comment:KidLego09/Could Sugar and Owen Be Siblings?/@comment-25297892-20141105103941

Owen has only two little brothers that are really similar to him judging from the "animation" of his memories about.Sugar said to have a little Brother,but because Owen is 17 or 18/19 years old when TDI started and Sugar is around the same age if not younger it's impossible the two are related:even if we assume that Sugar is Owen's big sister the difference could be of only one year at most,then it's impossible that Sugar was referring to Owen in "Three Zones and a Baby" because she would have never been able to take care of him being so Young. In addition,Sugar said her uncle was an inventor in "Scarlett Fever" while Owen said he was an hunter in "Sucky Outdoors".

By the way your theory is interesting,and I appreciated your efforts to give reasons Beyond the aspect.