[quote=@Sapphire]
<Snipped quote by Letter Bee>

But then how could an adult/adolescent Meta exist if any Metas created in the first wave would be a toddler?
[/quote]

All right, Spoiler: Metahuman powers come from a virus; they're not inborn except in cases where the mother already carried the virus.

[quote=@AcerRo]
I always thought of meta humans as mutants. Powers could awaken at any time.

Eli was in the rangers when his meta human powers came to be.
[/quote]

See above.