The sap and the chap

As you can see these two mocs share the same build, think of it as like eh... the seekers from transformers, I suppose they inherit from a similar region. I came up with this design when I was fiddling with the old 2006 matoran. It's especially effective for turaga mocs. 

Jegg is the blue ko matoran and Jacco isssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss the one on the right. 

As he usually sees it, the cup's half empty for Jegg. A ko matoran who suffers from depression. Whenever he finds something to do it tends to lighten his mood into being more enthusiastic, however when he's not doing anything he sits around acting gloomy. He lived a lonely life in his early days, until he met Miiru and his palls. His friends tend to get annoyed by his pessimistic nature, but do appreciate his honesty and sarcastic humor. 

Every matoran's color scheme represents the element they hail from, in this case makes Jacco a undecipherable wildcard. It doesn't help the fact that no one, including himself knows where he came from. He's not entirely sure if he's even a matoran. One thing that is certain, is that he's as crazy as his colors suggest. Not to mention he's loud and often blurts out things that sometimes aren't relevant to the situation.