Bowser Jr.'s Lava Reactor is an boss galaxy found in Super Mario Galaxy. It is accessed from the Engine Room. The boss of this galaxy is King Kaliente, who makes his second appearance.
Ad blocker interference detected!
Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers
Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.