Re: Best upgrades

@agqwpe663oe6  So far, that's an excellent list, go great work! I use many of these upgrades on my Zombies. I also suggest Refreshing Revive, Combo for many characters, Wormhole and Power Wash for Scientist, Applying Pressure and Shoot the Gap for All-Star, Stick and Move and Speed Bag for Super Brainz and there many more I can suggest.

The name you forgot for Electric Slide's heal while invincible upgrade is called "deliberated".