Akira just like the Fsm is both Oni and Dragon unlike the Fsm Akira main form is a dragon with Oni features.

(Image)

Her dragon form is a mixture between the two pictures but more of a gunmetal grey/silver with black and gold accents with purple eyes, the size of her dragon form is a bit bigger than Rontu and Egalt but her full size is bigger than Firstbourne but not by too much

(Serpentine form image)

her serpentine form has grey/silver scales with purple eyes, along the back of her neck she has two small to medium length spikes/horns (similar to the constrictai), they are curved in a way that looks similar to a sharks dorsal fin, the one closest to her is a bit bigger than the one below it, at the tip of her tail she has a what looks to be a rattle similarto a rattle snake but instead of being hollow, it is made out of flexible but sturdy bone, specifically osteoderms and vertebrae like an ankylosaurus

As explained in the prologue her serpentine form is the one on the right but as of the next chapter will be full size, a little bit bigger than a Anacondrai she wears a dark black cloak similar to pythor's in Rebooted.

Her weapons that I will tell you about as of now are the sword in the picture of which is made out of the same material that the Anacondrai blades are.

She has no venom but uses the elemental power of poison as a substitute and can make however deadly she wants or use it to put those she bits to sleep

She has access to all elemental powers shown in Ninjago from season 1 too dragons rising including wind,water,and storm

Akira is mischievous so if she fights anyone she will almost always fight a level above them and will sometimes allow her enemies to seem like they're winning

Due to possessing the element of time she knows that there are things that shouldn't be changed no matter how much she would like to.