0% Approval Rating: Downplayed. The vast majority of his subjects and subordinates either don't respect him or are terrified he'll smash them into a bloody pulp when it suits him. Even the younger Oceans (sans Milani), who can tolerate him just fine, see fit to abandon him in the evacuation of Nero 66 as it's about to be blown to dust by his antimatter bombs. The only subordinate who enjoys working under him is Ijuna, his Sexy Secretary, but only because she's been Conditioned to Accept Horror and developed Stockholm Syndrome after days of horrific torture.
Adopted into Royalty: He was taken in by Emperor Nero as his son according to the will of the Empire Dice, effectively makes him Nero's heir apparent.
Always Someone Better: Downplayed. Right before his on-screen debut, Shura is shilled by Orc as the superior Gravity Master to either Shiki or Ziggy, even with Shiki's Overdrive taken into account. This is supported when the two face off on Nero 66, with Shura's varied attacks beating out Shiki's greater focus on raw strength. By this point, however, Shiki has more or less caught up to Shura's level thanks to his training under Xenolith, who also taught Shiki how to use Black Sky, the ultimate Gravity Ether Gear technique, something Shura (a self-taught user) never learned in the first place.
Big Bad Wannabe: Shura fancies himself as being part of the series Big Bad Ensemble among the likes of Ziggy, and he certainly has all the power and resources to back it up. After all his bluster and gloating, however, he finds himself thoroughly Out-Gambitted by his own father in such a way that his Evil Plan would have blown up in his face (pun intended) even if he succeeded.
Card-Carrying Villain: The man is incredibly aware of how evil he is and wears it on his sleeve, to the point where he takes all the reasons Shiki has to hate him and rubs them in his face.
The Evil Prince: Besides riding the cosmos of all sentient machines, Shura's end goal is to dispose of his father and take his place as supreme ruler of the Aoi Cosmos.
Evil Versus Evil: Shura's plan to destroy all robots in the Aoi Cosmos is in direct conflict with Ziggy's goal of controlling all robots.
Freudian Excuse: As inexcusably evil as he is, it can be traced back to how he grew up under an emotionally detached father, never knowing love from or how to love anyone else, until the sheer starvation of external affection twisted him into a depraved sociopath. It's also all but stated that The Dark Side of his gravity powers had something to do with his descent into madness.
The Gift: Shura has a natural affinity for gravity powers that dates as far back as his childhood, which has since led him to become a formidable, self-learned Gravity Master in both strength and technique.
Heel–Face Door-Slam: Very heavily downplayed as he never once expresses remorse for his actions, but he is finally humanized through his love for Ijuna mere moments before they both get blasted to kingdom come with the rest of Nero 66, ensuring that nobody else will know him as anything more than an inhumane monster.
It's All About Me: Shura plainly states this when Shiki lambasts him for how he treats life so lightly, replying that the only life he believes has any weight is his own.
Love Epiphany: At some point back when Ijuna was his torture slave, Shura grew attached to her after she started showing signs of Stockholm Syndrome, leading him to take her on as his secretary. Given that Ijuna's Ether Gear forces people to fall in love, he reasoned that he was simply under her spell after figuring out she brainwashed herself into loving him. After Ijuna reveals that Shura was immune to her powers the entire time, however, it dawns on him that his own love for her is genuine, which sends him into a Villainous BSoD.
Love Redeems: Downplayed and Played for Drama, and in an especially twisted way. In his last few moments before getting atomized along with Ijuna and the rest of Nero 66, he has a Love Epiphany towards her when she confesses that she still loves him despite the nightmare he put her through as his captive and torture victim, which draws out a sliver of humanity in him that moves him to tears. While she acknowledges how only someone as insane as she is could ever love him, the fact that he's capable of crying proves to her that even a garbage human being is still a human being.
A Match Made in Stockholm: His relationship with Ijuna begins with Shura kidnapping her and faking her death so he could torture and publicly humiliate her (case in point, walking her naked through the streets with a bomb up her rectum). It eventually reached a point where she awakened her Ether Gear and made herself fall in love with him, at which time Shura grew attached to her and hired her as a secretary, something he concluded to be another result of her love-kindling powers. It isn't until moments before they die that Ijuna realizes he fell in love with her all on his own, in turn cementing her love for him and leaving them Together in Death.
No-Sell: Shura is unaffected by Ijuna's "Red Destiny" Ether Gear, which forcefully binds people together in love so long as they have experienced love for themselves before, something Shura never had. Ijuna presents this as evidence that Shura fell in love with her for real.
Villain Has a Point: When Shiki criticizes Shura for treating others' lives so lightly, arguing that all life carries weight, Shura turns that argument on its head by asking if that includes himself. Shiki finds he has no retort as Shura reminds him how he'd just tortured Witch to the brink of death For the Evulz, and is out to kill every last robot in the Aoi Cosmos, whose lives Shiki is fighting Shura to protect. Considering this happens right after Shiki makes an Implied Death Threat to Shura, it's not an unfounded question.
