are they really killers or are they just stereotyped?
In Western cultures, killer whales were historically feared as dangerous, savage predators. However, of the very few confirmed attacks on humans by wild killer whales, none have been fatal
Killer whale
Of the very few confirmed attacks on humans by wild killer whales, none have been fatal. 
where does the term killer whale come from The genus name "Orcinus" means "of the kingdom of the dead", or "belonging to Orcus". what is this organism? The killer whale or orca is a toothed whale belonging to the oceanic dolphin family, of which it is the largest member. what are their different varieties? There are three to five types of killer whales are they hunted? Yes, commercial hunting of killer whales date to the 18th century
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Killer whale [SEP] "Killer" stereotype
In Western cultures, killer whales were historically feared as dangerous, savage predators. The first written description of a killer whale was given by Pliny the Elder "circa" AD 70, who wrote, "Orcas (the appearance of which no image can express, other than an enormous mass of savage flesh with teeth) are the enemy of [other kinds of whale]... they charge and pierce them like warships ramming." Of the very few confirmed attacks on humans by wild killer whales, none have been fatal. In one instance, killer whales tried to tip ice floes on which a dog team and photographer of the Terra Nova Expedition were standing.