I'm doing my best to complete this story as fast as I can.
And for Hazama I only saw one 'review' that said to add him.
In Ozpin's office, Relius was discussing with Ozpin, Glynda, Qrow and a black haired man wearing white cloths.
"Welcome to…Remnant Relius Clover" said Ozpin.
"Come on Ozpin, this man is dangerous. He should be locked up" said the black haired man.
"I don't think that will work. His doll is not a play-toy. If he was that dangerous, then why are we still alive Ironwood?" replied Ozpin.
"You need to listen to Ozpin 'James'" said Qrow with a taunting smile "I've seen what he could do. No, I've seen the minimum of his efforts in a fight against four opponents"
"That's not the point Qrow!" yelled James.
"Too much noise. If you have brought me here to give me a headache, then I think that I will be on my way with the Murakumo unit" said Relius holding his head.
"Unfortunately, you can't take Nu with you yet. She needs to complete her studies her at Beacon" said Ozpin.
Relius laughed and said "Nu doesn't need anything, all what she needs have been implanted in her: How to kill her enemy. That reminds me to updates her and erase any kind of things she learned here"
"That's cold you know? You surly need to study how to speak normally with people Relius" said a green haired in a black costume.
"Who are you?! How did you got here?!" asked Ironwood.
"I think that you can do an exception with him. My name is Hazama, and I got here because your security sucks. Not enough to activate my grimoire" said the man.
"And you surly took your time" replied the masked man.
"I forgot myself when I was playing with a girl. If I remember correctly her name was Winter Schnee, reminds me the major of the 4th Magic Division, you know, Major Jin Kisaragi"
"And how so?"
"She can use ice"
"Hazama, the major don't 'use' ice, he 'manipulate' ice. Please, remember it"
"Yeah yeah whatever"
"You've fought Winter Schnee?" asked Glynda.
"Please, don't insult me, I didn't use my Oroboros" answered the man.
"Good for that ice queen" said Qrow, learning glares from Glynda and Ironwood "stop glaring at me like that, I just commented"
"So you know each other?" asked Ozpin the two newcomers.
"Well…how to put it? Let's say he created me" answered Hazama.
"This isn't time for joking my boy!" replied Ironwood.
"How rude! You'd better stay quiet or you'll regret it, and also I'm over 100 year old" said Hazama opening one of his eyes on the man.
"Wha-" said the general before he was interrupted by Relius.
"Trust me, making him angry is a big mistake. And he have said the truth, he don't know how to promptly lie" and the people stares at him.
"So, you think that you play god by creating persons?" asked the general.
"I don't create people" corrected Relius "I create things that I can use in my experiments"
"Disgusting, and to think that such a sweet girl obey you" said Glynda.
"Obeyed me. Its look like she have changed when she came here" said relius.
"Can we return to our main subject?" asked Ozpin.
"You want us to join your 'school'?" asked Hazama.
"Yes, we need as much manpower as possible" answered Hazama.
"Is this a combat school?" asked Relius.
"Yeah, why're you asking" said Qrow.
"He just wants to 'Observe' your students" answered Hazama.
"Observe?" asked Ozpin.
"You'll not like the answer" said Hazama to the man.
"I see that I have a lot of work if I decide to join: First, securing the school, then, creating combat dolls that can help them, and finally, make sure that their weapons are good enough" said Relius holding his chin.
"If that can help, then you have my permission to do so" said Ozpin to the masked man.
"I will need to do some adjustments on Nu" said Relius.
"And why you need to do that?" asked Glynda.
"To make her use her full might" answered Relius.
"Can I ask you something?" asked the general, having the attention of the scientist "can you have a look in a weapon of Atlas?"
"You know how to speak with him" commented Hazama.
"Yes, I can do that. When will I see that weapon?" said Relius.
"Penny! Come!" as soon as the general yelled those two worlds an orange haired girl entered and bowed to every person in the room.
"She kinda reminds me of the number twelve, you know" commented Hazama.
"Please don't remind me of this failure" said Relius before smiling and walking toward the girl "I will need a week and some materials"
"And by materials he means people" said Hazama.
"What kind of monster are you?!" asked furiously Glynda.
Relius only sights and said "you are the third person calling me a monster. You people knows nothing of science"
Seeing where this is leading Iron wood said "we have some prisoners of the White Fang, you can use them" earning a smile from Relius.
"Don't worry, you will like the result" said Relius to the general.
"You can't be serious James?! You accept his method?!" asked Glynda with shock.
"Now then, Lets began, shall we?" said Relius with a smile.
"I think that I'll begin in reinforcing the security of this school" said Hazama to Ozpin who responded with a nod.
"Will you also need 'Materials'?" asked Glynda.
"Oh dear, why are you applying that I'm like him" pointing Relius "I don't like violence and I always try to avoided" said Hazama.
"Like with the ice queen?" asked Qrow.
"She attacked me, I only defended myself" replied the green haired man.
Meanwhile in the cafeteria, team RWBY and team JNPR were having a food battle.
"Justice will be swift! Justice will be painful! It will be delicious!" yelled Ruby as the same time as Sun and a blue haired teen entered.
After half an hour, the battle ended with the victory of Ruby and team RWBY, leaving a mess.
"I love these guys" commented Sun.
Glynda entered and arranged the place "children, please do not play with you food" Nora burped and Yang fell from the sky.
"Let it go" said Ozpin who just came.
Glynda sights and said "there're supposed to be the defenders of the world"
"They will be, but now they're still children, and with Relius Clover joining us, they will live through hell. They deserve to play a little" said Ozpin.
Nu walked in front of them bowed and said "I am sorry for the commotion we have done"
"Oh Nu, if only everyone was like you, my life will be easier" said Glynda.
"Come on now, she have made a lot of progress in breaking her shell" replied Ozpin and both of them smiled at that fact.