Name: Prince Zalaski
First Appearance: Thor (vol. 1) #429 (Feb. 1991): "This World Is Mine!"
First Appearance (Additional Details): (behind the scenes) Thor (vol. 1) #428 (Jan. 1991): "If This Be Juggernaut!"; Thor (vol. 1) #429 (Feb. 1991): "This World Is Mine!"
Number of Appearances: 2
Note: enlisted Thor's aid against Juggernaut
Zalaski was the ruler of an unnamed extradimensional alien dimension. His realm was conquered by the Earth villain Juggernaut. In order to vanquish Juggernaut, Zalaski released the super-hero Thor. (At that time, "Thor" was actually Eric Masterson, who would later be known as "Thunderstrike.") Masterson vanquished the Juggernaut, but prevented Zalaski from resuming what his dictatorial rule of the dimension.
Suggested links for further research about this character and the character's religious affiliation: