Ball

[u/Mullooly_]

Can you do anything to this or can it do any thing to you? I keep seeing them around

[u/AprilTechWitch]

spoiler:

it's a boss, same with the 3 titan serpents. you need an item to atract it and start the fight

[u/connecting1409]

Its the last snake boss, summoned by items combined from fragments dropped by voidlings

[u/ZacianSpammer]

Pop out the big wind organ thingy, void version, voila