Translation of "two kids" into Spanish

Then maybe he really did make those two kids disappear.

Entonces tal vez él hizo que aquellos dos chicos desaparecieran.

Although he works and has two kids, he has started studying at the university.

Aunque tiene dos hijos y trabaja, empezó a estudiar en la universidad.

The two kids on the cycles were behaving irresponsibly.

Los dos muchachos de las bicicletas se comportaban irresponsablemente.

Look, you're just two kids playing way over their heads.

Miren, son sólo dos niños jugando muy por encima de su nivel.