This page is going under a reboot!

Julia Finitevus, the owner of Octavia-Ca Dax the Echidna (Dark Mobius), is currently rebooting this page. As such, some sections may change drastically.

This character exists primarily or exclusively within Julia Finitevus's continuity. Information in this article may not be canonical to the storyline of any other Sonic fanon continuity.

~                                                                                                                                                                         ~    

Cquote1 Simpletons!!! Do you really think that YOU can rule over Mobius?! Inferior creatures!! Cquote2
Octavia-Ca Dax

You may be looking for the Light Mobius counterpart, Chloe-Su, or the Chaos Mobius counterpart, Jana-Su

Octavia-Ca Dax is a self-genetically altered female Echidna born in the future of Dark Mobius and the daughter of Jani-Ca.


Octavia-Ca, due to her genetic enhancements, believes that she is superior to all other Mobians, especially towards those who are not genetically altered like her. This trait makes her especially egomaniacal and she does not care if anyone gets hurt or killed in her conquests, even her fellow genetically altered Mobians. She also loathes those who have failed her and will willingly execute them as punishment. She expresses her loathing of "lower organic lifeforms" to the fullest, much to her mother Jani-Ca's worry. Octavia-Ca also is very greedy in the sense of obtaining great power and so she will go to the most horrifying lengths just to achieve it. 


Octavia-Ca has basically the same abilities as Chloe-Su, but instead of manipulating regular Chaos Energy, she manipulates the corrupted version, and at a much higher scale than Chloe-Su. Another difference is that she can somewhat manipulate dark matter, but on a very small scale. Octavia-Ca also uses her Warp Rings in a manner very similar to that of Dr. Finitevus. Octavia-Ca also has a lot of experience with technology and can create almost any machine that she needs to get the job done. She also has baffling coding skills, to a degree that hasn't been reached by any Mobian in centuries. Octavia-Ca also has experience in genetic alteration, which is proven by the fact that she self-genetically enhanced herself.


Octavia-Ca's inability to understand why people do what they do can pose an issue when someone tries to get in the way of her goals. Another weakness is the fact that because she manipulates Chaos Energy more than Chloe-Su does, Octavia-Ca has less ability in hand to hand combat and using melee or projectile weapons. She also can become tired if she uses her Chaos Powers or dark matter powers for too long.


(Going under a MAJOR reboot!)


Octavia-Ca made her first appearance at age fourteen in the roleplay Westwood Prep for Snobs and Rich Kids (owned by Annabel Rich). She later appeared in the noncanon fanfiction Legends of an Echidna, Part 1 and is set to appear in the noncanon sequel Legends of an Echidna, Part 2.

("Westwood Prep for Snobs and Rich Kids" canonicity is uncertain at this time.)


Octavia-Ca is a purple female Echidna with violet eyes and purple bangs with yellow streaks in them. She typically wears a silvery grey shirt with a blue and yellow collar on it, which is covered by a dark grey leather jacket. Octavia-Ca also wears a white two fingered glove on her left hand with a teal bracer that has blue spikes on it and has her right hand wrapped in gauze. Her right arm is adorned with several Warp Rings, similar to Dr. Finitevus. Unlike her Light Mobius counterpart, Chloe-Su, she doesn't wear glasses and instead wears contacts. Octavia-Ca also wears dark grey pants and black knee high boots.


Main Theme

Octavia-Ca's main theme is Burning Bright by Shinedown.

Information: Songwriters: BRENT SMITH, TONY BATTAGLIA

© Sony/ATV Music Publishing LLC, Universal Music Publishing Group

For non-commercial use only.

Additional Themes

(Coming soon!)

Additional Quotes

Get out of my way! - Octavia-Ca fighting against Silver the Hedgehog

You cannot stop me... I will not quit until I do what my idiot father never could... - Octavia-Ca fighting against Sonic and the rest of the Freedom Fighters

I will kill you all if I must. - Octavia-Ca fighting against Team Dark

Hahahaha! Fools! You cannot stop the revival of Dark Gaia himself! - Octavia-Ca attempting to unleash Dark Gaia upon Mobius

Pathetic... you think your manipulation of Chaos Energy is supposed to intimidate me? - Octavia-Ca vs Super Shadow

Of all the people I have met... you must be the most incompetent! - Octavia-Ca vs Rouge

Grrrf! No! I will not be defeated! - Octavia-Ca, angry that her plan failed

You're a failure to your people! - Octavia-Ca fighting Dr. Finitevus


  • Octavia-Ca's surname "Dax" is actually inspired by the character Dax from Star Trek Deep Space Nine. Basically she's named after Dax, sort of.
  • Octavia-Ca is about an inch taller than her Light Mobius counterpart, Chloe-Su.
  • Octavia-Ca was originally going to be an antihero, but she turned out to be too dark of a character for that, so that's why she is a villainess instead. And Chaotic Evil, of course...
  • I originally intended to have Octavia-Ca wear shades like Jana-Su, but I completely forgot about it until I uploaded my picture here. I decided to just leave it be and have her wear contacts instead.
  • Octavia-Ca relies much more on her Chaos abilities than Chloe-Su, making her weaker in other forms of combat.
  • Seeing as Octavia-Ca is Chloe-Su's and Jana-Su's alternate universe counterpart, it's very likely that Dr. Finitevus (the Dark Mobius version, anyway) is her father as well. This also has been hinted when Octavia-Ca claims she will do what her father never could. Since Octavia-Ca manipulates corrupted Chaos Energy, it's even more likely so.
  • Octavia-Ca shares several striking similarities to Alkaline the Destroyer (SuperSilverXtreme14's character) and Xophtré (XophPsycho's character).
  • Octavia-Ca demonstrates ambidextrous ability, but is technically left-handed.
  • This is the only fan character that I have created so far who has a picture that has been coloured by me.
  • Like Chloe-Su and Jana-Su, Octavia-Ca usually talks in a British manner. However, she also uses the British accent as well, differentiating her a little more from her alternate universe counterparts.
  • Octavia-Ca was once seen listening to a CD by the Mobian version of Gordon Lightfoot, G. Lynx Lightfoot, in the Westwood Prep for Snobs and Rich Kids roleplay.
  • Octavia-Ca is not above cursing, a bit like her Light Mobius counterpart. 
  • In Westwood Prep for Snobs and Rich Kids, as a sort of poetic thing, Octavia-Ca shares a dorm with Melissa Craw, much like how Chloe-Su shares a dorm with Mecha Melissa in Chaos Academy.


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