It is unknown what kind of Matoran Kylord was, even when he was transformed into a Toa.
It is unknown what Kylord's Matoran life was like, but it is known that one day, Kylord encountered Tazzuk and killed most of his friends except Kylord himself. A Toa known as Iarox saved him and gave him a Toa Stone, immediately transforming him into a Toa. Iarox then intorduce a Toa of Water known as Cyrax to him, who Iarox befriended a while ago. But unknowningly, Tazzuk wanted Kylord to live (due to the fact he discovered his element during this time).
Despite not knowing his element, he was a very skilled at combat and a good tactical commander. He has fought many Rahi's, he even driven off a group of Visorak from an island.
The Order realize this and sent Deccon to recruit Kylord into the Order of Mata Nui. Kylord didn't join, but decided to help the organization when in need of him.
He was at one point confronting a mysterious figure known as Megdeth. Megdeth nearly killed Kylord, but an unknown warrior saved him, but Megdeth escaped.
One day, the Order called Kylord for one of his most difficult task: go to Destral and take over the island. He was paired up with another Toa known as "Brutal".
Kylord and "Brutal" then departed to Destral to begin their ambush on the island and it's inhabitants.
Once on the island, Kylord and "Brutal" immediatelt began their mission by planting a bomb that "Brutal" had brought with them (Kylord did not know how they were going to damage the island during this time). Once the bomb activated, Kylord and "Brutal" attempted to aviod the explosion, but barely did.
After the sabotage of the fortress, a group of Rahkshi's attack the two Toa's, but were defeated by the Toa's. Kylord and "Brutal" then splitted up, as Kylord is watching out for any more Brotherhood servants or members.