Snowstar

Mark is a genius military weapon designer who was kidnapped by a mafia gang after refusing to work for them.
They forced him to design unique weapons for five years, until one day he successfully escaped only to get shot by his trusted comrades.
*Ding! You awakened a weapon system.
When he opened his eyes, he was in a different body and in a different world.
"You want to kill a wild boar without being detected? Forget about bow and arrow. Here, I present you this sniper rifle."
"You want to kill a horde of goblins from the sky? Forget about those flying carpets and brooms. Here, I present you the fighter jet." 
"You want to kill a dragon? Forget about taking the help of the S-class adventure team. Here, I present you a nuclear bomb."
Join Mark Spencer/ Lu Zhen as he brings the whole world to its knees with the help of his weapon system.
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Note: Author isn't born in an English-speaking nation and has no editor either. So, please be understanding if there are any grammatical errors.
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Author's current works: War Online, My Soul Card is a Reaper
Author's other notable works:  The Last Slytherin, The Sharingan Hyuga
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You can also support the Author through Patreon or buy coffee on Ko-fi.com

https://www.patreon.com/snowstar

https://ko-fi.com/snowstar5061

Weapon seller in the world of magic

Just like the weapons, every assistant robot can be sold in the store for 200 gold coins each but Mark didn't want to sell these ones despite the fact that they were only suitable to do menial tasks.

He was worried that some people are smart enough to make them do other tasks than the ones they were designed for.

For example, Mark himself wanted to use these rank-1 robots to operate the tanks in the war. All they need to know is how to drive and press the triggers to launch warheads.

With his manpower, he hoped to create his own army, strong enough to wipe out any force that tries to go against him.

He summoned two of them, one is a butler, and the other is a fighter.

They look a bit different from the one he had seen at the factory.

The one at the factory was like a cute assistant robot one would see at the restaurants but the one that was created is completely made of metal and is humanoid in appearance.

The Cardinal is an elf