Twin characters in a work of modern fiction come in all sorts. However, when twins are born
over the course of the story (as part of a Babies Ever After
or otherwise), they are almost always male and female fraternal twins.
Less prominent in mythology
due to the blurred lines between story and backstory. In ancient myths or works like the Silmarillion
that are deliberately mythological the birth of twin brothers is much more common. The birth of twin girls is generally rare in all media.
Especially common for firstborn twins in a small Nuclear Family
. If twins are born into a large family that already has more than one child of the other gender this trope is more likely to be averted. When this trope is averted for other reasons it's a very bad sign, as one or both of the resulting children is usually supernatural
. Mythological aversions tend to have different fathers or be destined to depose or kill each other.
Frequently combined with Spin-Offspring
. Contrast Separated at Birth
, which is a backstory trope for preexisting older characters.
- Animorphs: Darwin and Madra.
- Somewhat averted in the later Anne of Green Gables books, where Anne and Gilbert have fraternal female twins. Not quite an aversion because their conception and birth is skipped over completely and they're introduced as children.
- Possibly averted in the Belgariad with Polgara's twins, although since they're deliberately nameless and genderless it's really hard to say.
- Dune: Leto II and Ghanima.
- Flowers in the Attic: Cory and Carrie
- O-Lan's twins in The Good Earth by Pearl S. Buck.
- Honor Harrington: Honor's siblings Faith and James.
- Little Women: Meg's twins.
- Petaybee: Ronan and Murel
- Vorkosigan Saga: Aral and Helen. Perhaps not technically twins, but the same parents and born at the same time.
- Classical Mythology: Apollo and Artemis. In a weird variant, the foursome of Castor, Polydeuces, Clytemnestra, and Helen.
- Norse Mythology: Freyr and Freyja. Borgny gives birth to a set in the Elder Edda.