1 boy vs a whole bunch of monsters
Is mva "Monsters vs Aliens"?
In that case he'd be fighting B.O.B., Dr Cockroach Ph.D., Missing Link, and Ginormica.
Whilst Goop would defeat B.O.B., Greymatter would beat Dr Cockroach, almost any alien would beat Link, and Way Big or Humungosaur would beat Ginormica, he can't be strong, smart, fast, and durable enough all at the same time. He'd have to fight them 1 on 1.