My 3rd self moc [i know kinda pushen it] Shadow. And i dont mean to copy shadowgear i just love the name and power.
Shadow is the older brother Of Doom and has some of the same powers [like battle mask and blood bending] but is a toa not a spirit.
When Shadow was a little Matoran his brother was born,Doom. when doom turned 15 he discovered he was a spirit and became a spirit in toa form. Then one day doom transfered power to Shadow making him one of the most powerful toa in the world. Then with his training he became even more powerful. And now helps all in need even the toa black ops.