Marine Errant's page

That is a fairly nice conversion, but I am not sure about the choice of divine magic for the spellcasting.
I think occult fits more with the DnD 5ed warlock and the concept of the pact is not the same as blind subservience to a deity.
I have always loathed the cleric class (probably due to my loathing of religion in general....) but the warlock I can appreciate.
You make a deal with whatever power you choose (and there are some nice new ones in later 5ed books) and then you go off and do your own thing.
Just my tuppence worth :-)

The guy is obviously a child if he thinks that that is how evil works. Since this type of childish behaviour usually goes hand in hand with an inability to see anyone else's point of view I would suggest that you simply wait for his antipaladin to go to sleep and quietly cut his throat. He can complain all he wants but honestly, what kind of self-respecting evil character would put up with that kind of nonsense?
A big mouth does not usually lead to very high survivability prospects.

And when he whinges (which people like that always do) simply point out that you are just getting in before he tries to kill you, as he has already claimed he will do.....