I've been designing a big character upgrade system for one of my games. These are a few of the ideas I've had for Bluey's upgrades. They're all lightning-themed.

Magnetic Cushioning is your basic "you don't take fall damage anymore" upgrade. I wanted to keep in some semblance of sadistic fun of dropping your character from tall heights in order to hear the amazing sound they make when they hit the ground, so you still ragdoll when you impact. It also won't totally protect you from enemy attacks that smash you against walls.

Off-Hand Block lets you block with one hand. Every character (you have five) has their own shield style, their own "bolt" attack, and their own sidearm/rifle, which is why every term has the Character prefix. It's just written generically.

Lightning Dominion makes it so that Bluey doesn't take damage from lightning - instead it just heals him. If he's already at full health, he'll grow, because I know lots of you like that. Every character has their own Dominion upgrade (it's probably the one at the top of the tech tree) - Bluey has lightning, Darkmoon has fire, Elena has arcane, Dragoon has light, and Gatling has wind.

Electric Sight is an upgrade to the basic all-character Aura Vision power that lets you find objectives, tell enemies from friends, and see through walls. Electric Sight will find electric things. Combine it with Lightning Dominion to seek out enemies with electrical attacks, then corner them and force them to feed you with lightning, growing huge and buff. Mwahaha.

Oh yeah, I almost forgot. Powerspike is Bluey's wrist crossbow. It fires little bolts of lightning that can power machines.

Art, Character -  sabledrachen