They are two Silver Guardians powered by the new Trixyrium Crystals
Lt. Adam King/Black Trixyrium Ranger
Leader of the Silver Guardians: Roughnecks Squadron, Adam volunteered to be the Black Trixyrium Ranger when Wes and Eric refused. A top cadet, he was granted that honor. Every time he morphs, his strength, speed, and stamina increases by 4%.
Eve Queen/White Trixyrium Ranger
One of the five thieves from the Bio-Lab Raid, Eve stole the White Trixyrium Morpher and become the White Trixyrium Ranger after witnessing Adam using his. Like Adam, she gets enhanced with every use as well...