First Referenced:
The Fountain of Youth
Other References:
'I was told that everyone I'd served with in the military died shortly after I left. (Part 6)'
The Mad God is a gargantuan entity, massive even in comparison to the Multiverse Titans, which themselves are the size of several universe bubbles. Described by The Sword as being 'As big as you can imagine... and then a thousand times bigger than that.'
Traits:
Destructive, capable of wiping out multiple universes through its random, wild flailing. Does not seem to be aware of what it is doing.