After His parents death, the young Bruce decided to pursue his studies in Engineering( electronics and Mechanical ) in order to create a better and safer weapon to replace Gun.

All Die-Hard Fans, PUTＯＮｙｏｕｒＴＨｉｎｋｉｎｇＣａｐ

He will build something that makes the Ironman suit like an Antique!!! will he?

A safer gun? You mean a stun gun? Or a gun with rubber bullets?

I was going to say he would become Iron Man, but Jon Smith said it better:

@JonSmith said:

My guess he would make robot that resembles Astro Boy to be a Robin. He would also have robot dog like dynno mutt

He did study engineering, and he used the knowledge to create non-lethal weaponry and gadgets so he could fight crime.

He wouldnt be as cool

one would think Batman knew it all anyway

WHAT IF

I was thinking a darker version of Iron Man too. I guess he would use more armour, non-lethal weapons, vehicles etc.

@JonSmith said:

Best looking Iron Bat I've seen

He could make the gadgets and have Harold be the psychologist

@Eternal19 said:

He wouldnt be as cool

Agree. but since he will use more tech based weapons, we expect to see a total different style of him

Then Batman would be an engineer...

If he had the same amount of training then he'd be Iron man level.