You begin Random Heroes as a Bandit, AKA a relative weakling compared to the game's other characters, some of which differ in Health, Agility and Damage. With this in mind, upgrading will definitely give you an edge during the tougher stages.
-Bandit ($0): Low Health, Low Agility, Low Damage
-Girl ($0): Low Health, Low Agility, Low Damage
-Honest Abe ($0): Low Health, Low Agility, Low Damage
-Trucker ($0): Low Health, Low Agility, Low Damage
-Indiana ($1,000): Low Health, Low Agility, Low Damage
-Lunatic ($1,000): Low Health, Medium Agility, Low Damage
-Police Man ($1,000): Low Health, Low Agility, Medium Damage
-Robber ($1,000): Low Health, Low Agility, Medium Damage
-Cheerleader ($2,000): Low Health, Medium Agility, Low Damage
-Evil Scientist ($2,000): Medium Health, High Agility, Low Damage
-Miner ($2,000): Medium Health, Low Agility, Medium Damage
-Robodude ($2,000): High Health, Low Agility, High Damage
-Jester ($3,000): High Health, High Agility, Low Damage
-Neo ($3,000): High Health, High Agility, High Damage
-Nun ($3,000): High Health, High Agility, Low Damage
-Zombie ($3,000): High Health, Low Agility, Medium Damage

Embark on an inspiring mission of human connection beyond the UCA. Sam — with companions by his side — sets out on a new journey to save humanity from extinction. Join them as they traverse a world beset by otherworldly enemies, obstacles and a haunting question: should we have connected?