One day in Cloudsdale... Rainbow Dash was finishing today's training with Sorin and Spitfire, they went to were chatting in the break room until Rainbow Dash overheard Spitfire's conversation with Sorin. "Yo, Sorin. Have you heard about that alien girl that helped a few ponies around town?" Spitfire ask Sorin
"Yeah. From what I heard. She's a real life superhero. She claims that she is a red guardian." Sorin pointed out.
"I heard about the red guardians but i thought they were just comic books." Spitfire said. Rainbow Dash was getting even more jealous that to 2 most elite wonderbolts were talking about Twilight and her title. "I would kinda like to see her go up against me in a race. She can fly without wings. And she's a human."
Rainbow Dash was crossed and she stormed out of the breakroom. 'Twilight this, Twilight that, she's a red guardian and a superhero. So what. She can't be a big deal. I'll show her.' Rainbow Dash flew to the library and knocked on the door really hard.
Twilight opened the door. "Oh, hey Rainbow Dash. What brings you here?" She asked.
Rainbow step towards Twilight and pointed her finder at her. "Listen here Sparkle, ever since she came here, you've been getting everypony's attention. We don't need superheroes. We need only one hero. And that's me. I have a fan club that respects me. And lately my fan club and the Wonderbolts have been talking about how you've been helping people around."
"So what's your point in all this?" Twilight asked.
"I challenge you to a fight. I want to see your full power in action." Rainbow demanded. "I will not be out heroed by some human from another world."
Twilight already knew that Rainbow Dash is jealous of her. So she decided to give her what she wanted. "So be it. But when I'm done with you... you'll be changing your name to Rainbow Crash."
"Don't you ever call me that. You don't even know who your dwelling with... Sparkle...!" Rainbow Dash is furious.
Later...
In an open field, Twilight and Rainbow Dash were facing each other. The other girls came to watch and see Twilight full red guardian powers. Spitfire heard about this and wanted to watch the fight out of curiosity. "This should be a good fight." She said.
"She finally did it. She snapped." Pinkie said.
"Eeeup." Applejack said.
Rainbow Dash charged at Twilight with intensive speed and landed a punch. Twilight blocked it and jumped away. And then shoots some red energy beams from her hands to Rainbow Dash. Rainbow dodged it and Twilight charged in and landed a combo of two punches, and a round kick and an uppercut. But Rainbow broker that combo but using her feet to grab Twilight and throw her to the ground. Then Rainbow Dash swooped in and punched Twilight like there no tomorrow but Twilight showed her glowing red aura that's shrouding all over her body. And landed 5 punches to Rainbow Dash. Sending her flying and landing in he grass.
The others were in awe including Spitfire. Rainbow Dash got up from the ground and she was very angry. She felt a strange sparky feeling inside of her. "I think let's call it a draw Crashie. I fought super good, but I've been training my body to become a strong red guardian." Twilight said. But it was that moment... Twilight knew... She messed up...
The spark on Rainbow was getting stronger. And she got triggered when Twilight called her Crash. "Don't ever call me CRASH!!!!" She yelled and then she felt the spark bigger. It was starting to go away but she refused to let it die on her. "Come on, More power! MORE POWER!!!!!" She screamed at the top of her lungs and there was a flash of light. The light fade away and Twilight was so shocked at what she saw... everypony else was too. Rainbow Dash's fur was all white, her eyes were red and her mane and tail were like fire.
"Let's go for round 2. I won't be beaten by an alien human girl!!!" She flew up to the sky and then aimed at the Twilight with immense power. Twilight flew up to the air to get away from Rainbow Dash. It's like she's gone... crazy. Twilight flew to really high while Rainbow chased her up. Twilight stopped so she can time her fist to give Rainbow a red punch. Rainbow screamed on top of her lungs and catched up with Twilight. 
She took the punch and Rainbow and Twilight duke it out like there was no tomorrow. Then finally Rainbow Dash grabbed Twilight and flew drop down, Twilight activated her red aura and tried to use her powers to break from of Rainbow's grasp. They scream and the impact cause something Rainbow did before but with a new bonus ... a red sonic rainboom. The crashed on the ground and the impact became super intense. Everypony took cover from the impact. With the red aura how ever... it felt tingly. The girls and Spitfire saw Rainbow Dash and Twilight in the ground and damaged. They're still breathing, and Rainbow Dash was back to her normal colors. She started to laugh. "That was so... awesome..." She said. "You helped me get pass my limits. I never thought I had such intensive power."
"Wow... I never realized... your welcome." Twilight said. "I'm sorry for call you crash."
"I forgive you." Rainbow Dash said. "And I'm sorry too. I was so jealous that you are a true heroes. And you were becoming popular."
"I don't care about fame and popularity. I help people and the innocent because it's the right thing to do. That's what being a hero is about. Not for fame, just doing good for the community."
Rainbow Dash's mind was blown. Twilight was right. So she decided to help her up. And they shake hands and called it a draw.
"That was quite entertaining." Spitfire said. "Both of you have done well. I would like to see that for myself one day."
Everyone started laughing and later... they all went home. Rainbow Dash learned an important lesson about being a hero. Let's hope she'll remember next time.
To be continued...