Four years later
Third person
A man in a long cape with a hood walked through the doors. Natsu walked up to him. "Hello, who are…" his smile and words faded when the man growled at him showing fangs.
"Where is Makarov?" everyone readed their magic for a fight. "I am no threat to you unless you become a threat to m. I don't want to fight the whole Fairy Tail guild." a wolf walked in behind him. It was silver with red and orange swirls. Similar to the color of fire. "Hey, I told you to stay outside." his tone drastically changed. "Whatever, follow me. I was only asking where he was to be polite."
"You're too soft." the wolf said. It almost sounded like Romeo.
"You're too much like your dad."
"You almost sound like Chaim." Lucy said peering at him.
"Wasn't he the blind dragon slayer. Sorry I don't use dragon slayer magic."
"Oh." she said sadly
"Who is that!" thundered a voice. A black giant appeared in front of them.
"Hello Master Makarov." The man said. "Can we talk in private?
Makarov seemed surprised as he shrunk down to his normal size. "Follow me." they walked into the back room. When they got there Makarov glared at the man. "Why did you say you don't use dragon slayer magic anymore Chaim?"
"That isn't my name anymore."
"Then what is?"
"Renatus." the wolf interjected.
"Be quite Fenrir." Renatus said.
"Your wolf can talk?"
"Yep, he is also stronger than that little blond girl." Fenrir said. "Can I eat her?" he said turning to Renatus
"Not funny." Renatus said.
"Sorry."
They walked out of the room. "Hey brats! This is Renatus the newest member."
"Can he at least show his face?" Cana yelled.
"Sure." He said casting off his cloak. He had scars all over his face and chest.
"Fight me!" Natsu yelled.
"Gladly." Renatus said smiling evilly.
He walked outside. "Stay here." he said looking at Fenrir. When they got outside people started betting. Most bet on Natsu. Natsu started off with a fire breath. Renatus dodged and turned into a wolf. The wolf was silver with a black stripe down his back, blacks legs, and a patch of red on his muzzle. He lunged at Natsu and put Natsu's neck in his mouth. Natsu breathed fire down Renatus' throat and Renatus' head snapped back and Natsu punched his stomach and Renatus went flying. When he hit the ground he got up.
"You're strong. That actually hurt. Well, now I shall end this. Poison wolf fang!" His fangs glowed and he ran towards Natsu.
"Fire lightning Dragon mode. Fire lightning dragon's roar!" Natsu yelled.
Renatus smiled. "Lightning fire wolf roar!" he breathed fire and lightning back at Natsu. They collided and there was a flash of light. When it faded Natsu was lying on the ground. Renatus walked over to him in his human form. He reached out and helped Natsu up. He supported him through the doors. Fenrir jumped up and licked his face.
"Full power?" Fenrir asked him.
"Not even close." Renatus chuckled.
When Makarov came over to asked how it went Renatus interrupted.
"Can I become a S class mage?"
"Erza!" Makarov called her over.
"Yes master?" she replied
"He wants to become S class. Fight him, if he wins he becomes S class." Makarov said knowing that before he left he was already S class, but wanted to see more of his new power.
"Requip, flight armor!" Erza said changing into her speed armor. She ran lightning quick at Renatus who dodged her attack. He turned as she lunged at him again. He turned into a wolf, jumped to the side, and bit her exposed arm. She wrenched her arm away and Renatus's teeth ripped up her arm.
"Wolf's sonic roar!" Renatus yelled. He widened his maw open as far as it could go and roared. The roar blew back Erza.
"Giant's armor!" Erza yelled as she changed into the big yellow armor. She dug her hands into the ground to stop herself. Renatus closed his maw and smiled.
"Interesting, wolf's creeping ice fangs!" he ran at her and bit her leg. Ice formed around around where he bit her. The bite did nothing but the ice slowly grew around her leg. She scraped it off but it kept growing. "Molten metal wolf roar. A tornado of liquid metal flew at Erza.
"Adamantine armor!" Erza changed into the armor and put together the two half shields. His attack hit it and she was pushed back a few inches. When she tried to move, she found the ice had fitted up to her collarbone and halfway down her upper arm.
"Giant's armor!" the ice changed to fit her armor. Her strength enabled her to break the ice. "Heaven's wheel armor! Blumenblatt!" she summoned all her weapons and flew at Renatus. He changed into his human form and dodged all her strikes and weapons. When her attack was over he smiled.
"Haven't had a fight like that since I left the mountain, but time to win. Holy fire!" his fist burst into white fire he disappeared and suddenly appeared behind her. He punched her in the back and her wings shattered. She collapsed to the ground.
"He wins." she wheezed.
"Congratulations Renatus, you are now S class." Makarov said smiling.
Everyone celebrated. Renatus healed her wounds. He ate even more than Natsu and Fenrir ate as much as Natsu. The festivities soon ended as another man barged through the door. He was a big man with big muscles. He had a black crew cut.
"Where is Renatus?" he roared.