As far as I know, there were 4. They are Dionysus, Heracles (Hercules), Apollo, and Artemis.
Depending on the account you read, Athena was either Hera's step-daughter or her sister, and although in the step-daughter account, Hera was very angry at Zeus for having a child without her, the anger was directed at Zeus (or in some accounts his mistress), and not at Athena herself.
Hera is also the aunt of Artemis, as Hera is both wife and sister to Zeus. The mother of Artemis is Leto who either did not marry Zeus (which may be a bias of a monogamous interpreter) or was a co-wife along with Hera.
Where in myths Metis is the mother of Athena, Hera wife of Zeus would then be her "step-mother".
Since her father was Zeus, there are many step - brothers and step - sisters of Athena. She didn't have any real siblings, though.
Horus was one of the big gods and (supposedly) so was Anubis. Really they are both (step) brothers so they must be on the same level of power. (In a cool way...Anubis is cooler then Horus or that's my opinion)
Betty White has three step-children, two step daughters and a step son.
Betty White has three step-children, two step daughters and a step son.
Betty White has three step-children, two step daughters and a step son.
She has no step kids
He has 2 children and 2 step children
Artemis is the daughter of Zeus: Hera is the wife of Zeus, and was married to Zeus at the time of Artemis' birth - so, yes, Hera is the step-mother of Artemis.
He has 2 children and 2 step children
Depending on the account you read, Athena was either Hera's step-daughter or her sister, and although in the step-daughter account, Hera was very angry at Zeus for having a child without her, the anger was directed at Zeus (or in some accounts his mistress), and not at Athena herself.
Hera is also the aunt of Artemis, as Hera is both wife and sister to Zeus. The mother of Artemis is Leto who either did not marry Zeus (which may be a bias of a monogamous interpreter) or was a co-wife along with Hera.
What percentage of children in the UK live within a step-family
3 and two step children !!
Amelia had no children