stepchild

Spouse's child (other spouse's non-child).

My stepchild is a good person.

stepbrother

Stepparent's son (parent's stepson).

My stepbrother is a good person.

half-brother

Male that has one parent in common with other living beings.

My half-brother is a good person.

stepparent

Parent's spouse (non-parent).

My stepparent is a good person.

stepson

Spouse's son (other spouse's non-son).

My stepson is a good person.

stepdaughter

Spouse's daughter (other spouse's non-daughter).

My stepdaughter is a good person.

son

Male that is the result of the union of two gametes.

My son is a good person.