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“Sophie studied Dex a second longer and was about to reach for his hand—but Biana beat her to it, making Dex jump a little as their fingers twined together.”

—Narrator, in Book 8: Legacy

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. They currently remain friends, with no confirmed romantic interest from either Biana or Dex.

Both have shown stronger romantic feelings for other characters, Biana for Keefe and Dex for Sophie, until later books when moments between the pairs become less frequent. It had also been hinted that the feelings between Tam and Biana might be canon, possibly leading to another love triangle between the three. As of Legacy, the two have shown stronger feelings for each other that could possibly hint at a future relationship.

Pairing NamesEdit

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

Moments Edit

Book 1: Keeper of the Lost CitiesEdit

  • As a way to comfort Sophie, Dex states that Biana is probably jealous of Sophie because she is no longer the prettiest girl in school. This means that Dex thought of Biana as the prettiest girl in school before meeting Sophie, even though it might also mean that Dex thinks Sophie is the prettiest, no matter what.

Keepers of the Lost Cities: Neverseen Edit

  • Biana and Dex hang out in the boys' treehouse and don't seem very uncomfortable about it, unlike with Dex and Fitz.
  • Biana joins Dex on his hunt for stones.(Pg. 408)

Keeper of the Lost Cities: Lodestar Edit

  • Biana tells Dex she isn't going to ever take off the panic switch ring he gave her as a gift he made being a technopath.
  • 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.
  • 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 Edit

  • 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: Legacy Edit

  • Biana takes Dex's hand after he is unsure whether he wants to go into the cave where he and Sophie were kidnapped and Dex jumped and blushed when she did.
  • Dex and Biana were still holding hands in the cave
  • Biana says, "I'm assuming you'll update Dex and me..."
  • When Biana noticed that Dex stayed behind to talk to Sophie she frowned
  • When Stina dunked Dex in the mud, Biana tackled her to the ground.
  • Just before they were about to go into the King's Path, it is said that Biana was already clinging to Dex.
  • After Dex collapses with Sophie's enhancing, Biana offers to bring him inside.

Similarities and Differences Edit

Similarities: Edit

Differences: Edit

Trivia Edit

  • 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.
  • In a deleted line from Book 5: Lodestar, Biana says that an unknown character will have to face the wrath of "Dizznacker".
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Main Character Ships

Pairings with Sophie Elizabeth Foster

BianaLinh and BianaLinhDexFitzTamKeefe and FitzJensiKeefeMarellaWylieValin

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

DexKeefeLinhSophieMarellaKeefe and Sophie

Pairings with Biana Vacker

SophieDexTamMarellaJensiKeefeLinhLinh and Sophie

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


Pairings with Marella Redek


Pairings with Keefe Sencen

SophieTamMarellaDexBianaFitzLinhSophie and Fitz

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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