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Diana/Bex is the romantic/friendship pairing of Biana Vacker and Dexter Dizznee. At first, Dex despises the entire Vacker family, and only completely comes to accept them in Neverseen, when he apologizes. Later, both Biana and Dex do not show any feelings toward each other than friendship. It seems unlikely for this ship to sail, but it may happen if the crushes of these characters either get larger with somebody else or reject them. Currently, the relationship is just friends.

Both have shown stronger romantic feelings for other characters, Biana for Keefe and Dex for Sophie, until later books when moments between the pair become less frequent. In Book 5: Lodestar, there were many moments that hinted at a possible relationship between the two, but up until that point, there seemed that neither held romantic feelings for the other. It had also been hinted that the feelings between Tam and Biana might be canon, possibly having another love triangle for the three. As of Legacy, the two have shone stronger feelings for each other that could possibly hint at romance.

Pairing Names

  • Diana (D/ex and B/iana)
  • Dena (De/x and Bia/na)
  • Debi (De/x and Bi/ana)
  • Bex (B/iana and D/ex)
  • Dexiana (Dex/ter and B/iana)
  • Bianex (Bian/a and D/ex)
  • Vackizznee (Vacker/ Dizznee) (dubbed by Biana in Lodestar)
  • Dizznacker (Dizznee/Vacker) (dubbed by Biana in Lodestar)


Book 1: Keeper of the Lost Cities

Keeper of the Lost Cities: Exile

  • Biana is grieving for her father throughout the whole book and has little interaction with anyone except immediate family, therefore there is no information about their interactions unless assumed.

Keeper of the Lost Cities: Everblaze

Keepers of the Lost Cities: Neverseen

  • Biana and Dex, along with the rest of the group, go to join the Black Swan.
  • They hang out in the boys' treehouse and don't seem very uncomfortable about it, unlike with Dex and Fitz.
  • Dex feels guilty about Fitz's injury and decides he's going to try to be nicer to the Vackers.
  • Biana joins Dex on his hunt for stones.

Keeper of the Lost Cities: Lodestar

  • Biana tells Dex she isn't going to ever take off the panic switch ring he gave her.
  • Biana is introduced to Dex's family when she arrives at their home for a sleepover, and at first, Kesler is skeptical, but later questions his false opinion of Biana when she is excited to see Sophie's Imp, Iggy.
  • When Biana and the others find out that in Level 1, and possibly Level 2, Dex ate his lunch during class, she says that she was stupid back then. This implies that if she could go back, she would have eaten lunch with him.
  • Dex catches Biana when she slips.
  • Dex becomes bright red when she gets excited about him.
  • Biana is really impressed by the gadgets Dex has built around his house. 
  • Biana states that Dex should give himself more credit for all the work he does. 
  • Dex turns red at her comment, and it wouldn't be the only time he would blush because of Biana that night.
  • Biana calls Dex adorable while talking about him and Sophie.
  • Biana gives Dex a new hairstyle that is said to make him handsome.
  • Biana says that Dex and her families should be friends.
  • Dex's mom seems to like Biana when she comes to sleep over.
  • Dex chases after Sophie and Fitz, not wanting to be alone with Tam and Biana after they haven't seen each other in a while and Tam smiled to Biana.
  • Dex and Biana spend a lot of time together since Tam and Linh are with the Black Swan and Fitz and Sophie are training or talking with Keefe.
  • Biana pulls Dex into the group hug, when Sophie and Fitz are about to follow the starstone hairpin, and makes sure to include him.

Keeper of the Lost Cities: Nightfall

  • Biana builds Dex up when he confesses his doubts on his abilities as a Technopath: "'No way—no underestimating yourself like that. You're Dex Dizznee. You built the Twiggler. You translated the Lodestar symbol. You built this.' She held up her hand and pointed to the pretty pink panic switch ring he'd given her." (pg. 150)
  • Biana, noticing that Iggy is green, asks Sophie if Dex visited the day before. When Sophie tries to distract her, Biana persists, demanding why Dex was there.
  • Dex comforts Biana and "lets her soak his shoulder with snot and tears" when they find out Mr. Forkle is still alive.
  • Dex is speechless while they are getting Biana to wake up.
  • Biana turns to Dex right after Fitz and Sophie to tell her how she is.
  • Dex offers to carry Biana to Livvy/Physic after she is injured.
  • Biana mentions that she hailed Dex so they could work on the caches together without the triplets.
  • Sophie notices that Dex is wearing his hair in the style that Biana told him he looked good in.

Keeper of the Lost Cities: Flashback

Keeper of the Lost Cities: Legacy

  • Biana takes Dex's hand after he is unsure whether he wants to go into the cave where he and Sophie were kidnapped

Similarities and Differences



  • Biana has brown hair while Dex has strawberry blond hair.
  • Biana has teal eyes while Dex has periwinkle eyes like his father.
  • Biana is a Vanisher while Dex is a Technopath.
  • Dex's family is working-class, while Biana's family is in the Nobility.
  • Dex was Sophie's friend from the very beginning, while Biana doesn't like her until the end of Book 1: Keeper of the Lost Cities.
  • Dex is the oldest of his siblings, while Biana is the youngest.
  • Dex has three siblings, and Biana has two.
  • Dex's Parents are a bad match, while Biana's parents were on each others lists.


  • Biana looks like a Disney princess, according to Sophie, and Dex's last name is Dizznee. She could be a Dizznee princess.
  • Bex, one of the listed ship names, is also one of Dex's siblings.
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Main Character Ships

Pairings with Sophie Elizabeth Foster

BianaLinh and BianaLinhDexFitzTamJensiKeefeMarellaWylieValin

Pairings with Fitzroy Avery Vacker (a.k.a. Fitz)


Pairings with Biana Vacker

SophieDexTamMarellaJensiKeefeLinhLinh and Sophie

Pairings with Dexter Alvin Dizznee (a.k.a Dex)


Pairings with Marella Redek


Pairings with Keefe Sencen


Pairings with Tam Song


Pairings with Linh Song

SophieMarellaDexBianaFitzSophie and BianaWylieLinh

Pairings with Wylie Endal


Other Relationships

Platonic or Ability Enhancing Relationships

Sophie and Mr. ForkleKeefe and Lady BelvaKeefe and RoSophie and Fitz

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