Sonja Orglace

Sonja is a human whose spirit was brought back into the land of the living by a Soul Ring. Much of her past is shrouded in mystery.

Abilities
In her living days, Sonja was an ordinary human with no special abilities or powers. However, as a ghost, Sonja has been shown to be able to keep up with Sonic in a similar fashion to Tails, meaning that she has the gift of super speed. While her strength is rather low in comparison to other core characters, it is still more present in her than in any ordinary human. Sonja also has the ability of unrestricted flight due to her nonexistent weight.

Sonja is able to harness Chaos energy to the point of maintaining a super form, much like Sonic and Shadow. She can also vanish and reappear on a whim. She has shown to be able to mold her form into anything she so desires, whether it be an attractive young woman, or her true form, a horrifying and lanky ghoul. She is able to Multi-Boost despite not being a living being.

Sonic
Sonja's relationship with Sonic heavily depends on how the reader dictates Sonic to act to her and those she cares about in Sonic's Hourglass. It can range from hatred and disgust, to friendship, to romance. Sonic was Sonja's first real friend in centuries. This, along with her already being familiar with Sonic's likeness due to her being an avid fan-girl of the storybooks that Sonic traveled through and altered in the Sonic Storybook Series, makes her very clingy to him at the start.

Sonja's relationship with Sonic grows deeper after their encounter with Mr. Smuggles. Where she realizes that Sonic isn't perfect. Again, how Sonic treats her throughout the book of Sonic's Hourglass either has her resent or accept these flaws.

Pico
Sonja initially acts as a maternal figure to the orphaned Pico, and Pico immediately grows attached to her, to the point of mutual mourning between the two when the Marlanic Followers separate them in the "Masked" ending. Eventually, she accepts the woolly mammoth baby as her adoptive son. And Pico accepts her as his mother. Whether or not Sonic treats Pico well will have a lasting affect on Sonja's relationship with Sonic.

Marilyssa Orglace
At one point, during her lifetime, Sonja was married to Marilyssa. Their relationship sprouted in Sonja's young adult years, as early as 18 or as late as 20. During the bulk of their relationship, Sonja and Marilyssa treated each other very well. They were in many ways a perfect couple, even adopting a child by the name of Ramona. However, everything changed when the Xorda Ambassador was killed, and the alien Xorda species declared war on Earth.

Under the copious amounts of stress, knowing she carried the world on her shoulders, Marilyssa took her anger out on Sonja and Ramona. She became physically and emotionally abusive. Whenever she had a moment of grace, she quickly relapsed into her abusive patterns. This abuse hit its climax in the final hours of the first Day of Fury, when she murdered Sonja and Ramona, even if her intentions were to prevent their genes from being used to create the Primordials, Mutates, and Mobians.

During the final standoff of Sonic's Hourglass, how Sonic treated Sonja throughout the book will influence her decisions. If she was treated poorly, Sonja will see Sonic as her true abuser. Sonja will hesitate to kill Marilyssa in order to protect Sonic and Mobius as a whole. This leads to Sonic killing Marilyssa himself in a spontaneous act. This is the final nail in the coffin, and Sonja decides to use the gemstone in the hourglass to erase Mobius and its inhabitants herself.

If she was treated well by Sonic, Sonja will break free of the chains Marilyssa placed on her after years of abuse. She kills Marilyssa, no longer being her victim.