[Kurona]

He has his positives, but Grease consistently sticks out as the worst character of Build for me and one that I just can't bring myself to like. Every good trait he has and every well-done part of his story is brought down by him having the most unlikeable and downright creepy personality that he never grows out of.

While Kiva often failed to use its gimmick of telling both a Past and Present story effectively, Rook's introduction is one that stands out as actually taking advantage of the gimmick. You get to see Rook in the present day as this gentle giant; an almost childlike naivety and innocence contrasted with his past self as an unstoppable killing machine. It was genuinely quite well done.