Jack-Eye (also known as Aron) is a significant male character who serves as an ally and has a connection to Lyre. He has his own POV chapters and plays an important role in the story's supernatural conflicts. He is sometimes referred to by his real name Aron.

Aaron (or Aron) is Jack-Eye's real name. In Chapter 257, after shoving Aaron's hand away, a character stares at him. The dual naming suggests Jack-Eye is an alias used in certain contexts while Aron is his true identity.
Based on the dialogue, a female character has attacked Jack-Eye before when not fully conscious—possibly during a possessed state, arcana backlash, or shapeshifting episode. The fact that she's now "fully conscious" is significant.
Yes. In Chapter 237, "Lyre: Backlash," a reader notes that Lyre mentions Aron (Jack-Eye) four times, clearly missing him. Their separation is a source of emotional tension for Lyre throughout certain arcs.
Their separation (noted in Lyre missing him, Ch. 237) suggests a reunion is coming. Their relationship may parallel Grace and Caine's—two people whose bond transcends species and circumstance, with eventual reconciliation.
They communicate through phone and direct conversation, coordinating during crises (Book Two evacuation). Their relationship appears professional—Caine as authority, Jack-Eye as operative—with Lyre as the connecting factor.
Lyre and Jack-Eye (Aron) appear to have a close connection—romantic or deeply bonded. In Chapter 237, Lyre mentions Aron/Jack-Eye four times, indicating she misses him. They work as a team, relaying information and strategies.
The dialogue in Chapter 257 ("She's not going to jump me this time... She's fully conscious") suggests a female character attacked Jack-Eye while unconscious or possessed. This could be Lyre, Grace, or another character during an arcana episode.
Their centuries-long history, the divine connections that gave Lyre her powers, how they met, why they separated, and their own slow-burn reunion—a parallel love story with even higher supernatural stakes.
Jack-Eye has a darker, grittier voice with dark humor—his chapter "Rot and Rainbows" (Ch. 104) perfectly captures this contrast. He's pragmatic and direct, often serving as comic relief while dealing with serious situations.
Jack-Eye pulls the phone away during a conversation and discusses "the old ways"—traditional wolf shifter customs or methods that may offer solutions to current problems. This suggests a return to ancient practices.