Elrena

Elrena was a Keyblade wielder who appears in Kingdom Hearts Union χ. She was a member of the Dandelions, but almost nothing is known about her, except that she could be the older sister of Strelitzia... The official artwork for Elrena bears a striking resemblance to Larxene and if one rearranges his name and adds an X, Larxene is a possible result.

Before Kingdom Hearts Union X
Like the rest of the Dandelions, Elrena is sent to the new plan - "Unchained" - before the Keyblade War, surviving the conflict and forgetting about the world she was leaving.

Then, Elrena began to relive her past experiences in given versions of worlds with the rest of the Dandelions, while having the Keyblade War erased from her memories. Thanks to this, a double of Elrena - constituted from the recorded data of what she saw again in the virtual versions of the worlds - was created.

Kingdom Hearts Union X
One day, while she is sitting alone in one of the streets of the Daybreak Town, Elrena is approached by Lauriam, who asks her if she is Elrena. After she confirms her identity, Lauriam asks her what she knows about Strelitzia.