Gray

Mariana trench
deepest part of the ocean
Alien connected
Love-craftian
All tomorrows inspired
Protectors of humanity
Supreme Leader of the World Special Armed Forces A.N.G.E.L.S
His teen finds out about a alien like baby octopus, secretly, keeping it hidden
Celestial Baby octopus that can grow into a colossal monstrous being that
can wipe out half of humanity(God-level threat)
His son is his own descendant, but he's merely sharp minded and introverted with a
large interest in the unknown depths of the ocean, so he studied it, both as a hobby,
and a passion
He grows up to be attached with his pet octopus, that it gets challenging to hide him
The entire human race never liked doing, more so his father, the protector of humanity.
Beyond every titanic monster they've slayed, there's ALWAYS something bigger and worst.
Will they pair up with his colossal pet to further protect humanity in amidst of a bigger threat?
Or will his father take the thing he loves down for their future?

the bigger threat is alien species like the octopus, they're gonna destroy the lil pet octopus cuz he's a mutant(Earth species mutated with dangerous parasitic alien race)