Willie
*Yumi would quickly enter the scene, running in to deal help with anyone she could. Followed behind her was a companion she had just met recently, Oban. She wouldn't waste time beginning to summon monsters to combat the heartless and trying to create a path for people to try and escape.*
Scott
"It's these monsters from before!"

Oban would say as she ran onto the scene alongside Yumi, reaching into her coat's pockets and pulling out her knives and tossing them at the Heartless that were swarming in to aid her friend in saving people. 

"What in the world is going on First Mate Yumi??"
Willie
"I... I don't know... These are Heartless, but so many of them. Too many for me to handle alone... We will have to deal with them to at least protect the people who can't fight.."
Tonya
He almost did not notice them as their screaming blended in with everyone else's. Two individuals doing what they could to help, but they were obviously out of their depth.

The Mantis paid them no further mind. His goal was to minimize damage where he could. He had learned long ago that saving everyone was a futile effort in moments like this. He would let them do their own thing, but his priorities were set.
Johnny
The roar of a gummi engine would sound out above. Racing into the atmosphere and puncturing a hole through the storm clouds was a black gummiship, as it got close the cockpit would open to reveal a quite angry Lyon who was sporting an open Black Coat over his usual outfit. As he got close enough he jumped off the ship as it then rocketed up back into the atmosphere on autopilot. 

Lyon sailed through the sky, Black Coat flapping in the wind, skydived towards the largest concentration of darkness. Just so happened to be where Yumi was too. 

Using an Air Dash he slowed his decent to the ground and landed softly into a dodge roll next to Yumi and her new friend it seemed. 

"Hey." Lyon said to the two as he stood up Summoning his keyblade as well as taking in the surrounding conflict with the heartless. The smell of dark miasma was nauseating to say the least. There were so many heartless gathered here that they had to be searching for the heart of the world. Letting out a tch, Lyon decided to come up with some plan of action. That is until Lyon cut himself off before he could even start as he observed someone with a keyblade fighting off heartless in the distance. He rolled his eyes. Of course. Well he had no way of knowing before hand so he shouldn't blame himself for that. With this many around two were better than one. 

"Moths to a flame our kind... I don't know what you two will be doing but I'm going to try and cull the heard to keep them away from civis. Maybe find the world heart while I'm at it. My best theory as to why there'sso many right now here"

Just as he said that a few weak heartless tried to jump the three of them and Lyon proceded to make quick work of them in just a few seconds. The hearts flowing into the sky.

"Well best be careful you two."
Willie
"No Lyon! You should look for the keyhole! We may not be able to fully defeat them, but we can hold them off until the keyhole is locked! Think about it, what can we do if we end up finding it? We'd be surrounded by heartless and unable to lock it and have to be useless."