Instead of inking this on paper I just scanned the sketch and resketched over it and colored it in PS.
Here's a short story as well (chuck full of typos.)
After Raf went through a long and painful training program he finally learned "Mechanical Summon". This allows him to spawn mechanical weaponry at will.
Andro: Try it out.
Raf: OK here goes nothin.
*Raf summons a somewhat normal looking gun. *
Raf: This is it?
Andro: Your first summon is always your main weapon that fits your body, power, and skill level... Shoot it.
*Raf aims at rock in the cave and pulls the trigger.*
Raf: What wrong with it??
Andro: Let me see it.
*Grabs the gun and shoots towards a wall in the cave. *
*A ball of energy shoots of and destroys the entire wall. *
Andro: Looks like you got yourself a "Psycho Gun"
Raf: Psycho Gun?
Andro: It uses mental power and converts thought waves into energy. I can't even summon one of these. I’ve only seen one. My father had one. Try to use your thoughts.
*Raf shoots several normal sized rounds*
Andro: Follow me.
*They walk deeper into the cave*
Andro: I wasn't just teaching you that trick.
Raf: What do you mean?
Andro: Power up.
*Raf powered up to his maximum*
Andro: You can go further than that. I can prove it.
*Powers up a HUGE ball of energy and shoots it towards Raf*
Andro: If you let that explode your a goner. I suggest you do something.
*Raf puts his hands up to block the attack.
It connects pushing him back. *
Raf while sliding back: It's too powerful!
Andro: you better hurry, the cave wall is right behind you.
Raf: !!!I can't stop it!!!!!!
*Raf’s heel is almost touching the wall. *
*Huge explosion n light stuff*
*the cave caves in*
*Andro moves a rock off of himself and stands up*
Andro: ...I...I I guess you wasn't ready... I'm sorry Raf...
*A large pillar of light shoots out of the rocks.
Raf rises out flooded with blinding light*
*Raf looks at his arm to see the little gun has become a huge arm canon. *
Andro: I knew you could do it!
Super Raf: What am I? What happened to this gun? It changed.*
Andro: You reached a level long forgotten. It's called Super. As for your gun, It changed with you.
*A fleet of Enforcers can be seen flying in*
Andro: That's my Q. I have nothing more to teach you. Good-bye... For now… CHAOS CONTROL! *Blip*
*Super Raf looks down at his gun, then looks the fleet of enforcers.*
Super Raf: Yeah... bye... for now.
*A ball of energy starts forming at the end of his gun. *
Oh yeah! Raf used "Mechanical Summon" to upgrade his head gear too.