Staying out of the water due to paranoia that there may be a shark is not the right answer to a problem.
Since you clearly don’t know much about this game, I suggest you do just a bit of research before posting.
Funny thing about that… warlock , wizard, use of magic, use of powers.
You asked if the helmet was demonic. You must have a bit of a gut feeling about the implications of games promoting these themes. So must many others , given you suggest we google this theme as there is a wealth of questions on it.
What we watch , read, play with, interact with in life, the media, be it mainstream , or social media, affects us in some form. Elsewise there would be no rulings on these things by the Church , censorship bodies, and the Bible would not have advice on how best to live our lives, and what to avoid and shun.
Is watching porn ok? Gratuitous violence? Animal cruelty, how about watching witchcraft or watching people engaging in sorcery, ?
If you answer no to any of those, how is role playing as a warlock/ wizard who uses magic and sorcery , in an interactive ( or single user) game ok? Is role play as a warlock any different from role playing in other activities that the Church Catechises against?
Names such as cat, dog, warlock, plane, wand, spell all mean something. They have a dictionary definition. Thats language. Dog means 4 legged canine, usually loyal, barks , ways tail if happy, can get cranky and bite. I say dog , or shark, you identify with this term, this name.
Look up warlock. What does that term mean. What is identified with that term? What does society, the one you live in, identify with that term.
It can be a very good idea to stay out of the water, in a known hunting ground of a predator, or hangout location for a stinging jellyfish. We don’t put our hand in a place likely to harbour a poisonous snake. This is just practical advice, rather then paranoia. If you see a lovely Rockpool
On a hot day, but the sign says 'no swimming - crocodiles '. Watcha going to do?