So I was thinking about the lunar boss and I thought "hey if you are fighting the moon you stand no chance alone" so I thought about the boss summoning and I thought it would be cool if you summoned a boss (only one during the whole fight) it would help you fight in different way like

king slime: (if the moon is falling) bounces it back a bit to increase time for the boss to be defeated

eye of cthulhu:summons 20 servents to help you (they may not do much damage but they would make great distraction

eater of worlds:burrows into the moon dealing 5500 damage after a while and then flees

queen bee:gives you the honey buff for 3 minutes

cthulhu's brain:The same as eye of cthulhu only with creepers

skeletron:bashes into the moon at full speed to knocks it back a bit more then king slime and deals 2000 damage

the twins:A giant ball of cursed flames or a big laser beam hit the moon for 4500 damage in total

The destroyer:same as eater of worlds only it deals the damage alot quicker

skeletron prime:uses one of his four weapons to help you

vice:pushes the moon

chainsaw:deals 3000

cannon:fires 10 bombs that in total deals 3500

laser:fires every laser in the game at the moon

plantera:spits out 3 spiked balls that each deal 300 damage every 10 seconds lasts for 1 minute

golem:punches the moon 10 times dealing 6500 damage

and lastly duke fishron:summons a sharknado to help you

tell me what you think of my ideas every postive and negative comment is appreciated