This page is dedicated to Megaleg’s Moon Grand Star in Bowser Jr.’s Robot Reactor Galaxy. Bowser Jr.’s Robot Reactor is located in the Terrace dome and is the last galaxy to be unlocked in the dome, requiring 8 stars. It is here where you obtain the second Grand Star in the game.
The Starting Planet
When you land on this planet you want to take the oppurtunity to get all the star bits, coins and the 1-Up Mushroom, which shouldn’t take too long as the planet is relatvily small. To destory the glass containters that on the planet you need to have a Bullet Bill lock on and chase you and have it break the casing on impact. This is how you will get access to the warp star and head to Megaleg.
Megaleg - Boss Battle
To defeat Megaleg you’ll need to start by running up it’s leg while avoiding Bullet Bills along the way. Once you reach the top, just like before you need to get a Bullet Bill to follow you to destroy the first cage the has the Grand Star. When the first cage is destroyed this will trigger Megaleg to produce more turrets and fire more Bullet Bills and produce surrounding gate around the Grand Star.
You may need to stand closer to the turrets to have the Bullet Bills lock onto you. When they start you will need to carry on the theme of having the Bullet Bill break open the barriers that surround the Grand Star.
After defeating Megaleg you’ll earn your second Grand Star and be transported back to the observatory where the Fountain dome will now be unlocked.