The past history of Cain Marko on Earth-1081 is mostly unknown. Presumably, he got his powers from the Crimson Gem of Cyttorak in a similar fashion as he did in many other realities. When Morph was recalling his past during a battle in another reality, he recalled a battle between the Juggernaut and the X-Men, likely one of many between the two.
Powers and Abilities
The full extent of the Juggernaut's powers are unknown, however it's likely that his powers are on par with his Earth-616 counterpart.