Mano wasn't always who she was told she was. She used to be powerful. Volatile. Deadly. She wasn't even called Mano back then, until she split. At the end of the First Galactical Conflict, Mano lost one of her friends, her only friend at that time, and within that time, she shattered. She lost part of her heart, part of her mind, part of her soul and part of her body. Those pieces formed what Mano calls the Negative Deities, Deities filled with a negative emotion designed to overpower even the strongest person alive. They were ruthless, scavenging across galaxies and wreaking havoc in their paths, and Mano knew that deep within all of them, they were a part of her. The missing part of her Body became the Wrathful Deity, Pain. The missing part of her heart became the Sorrowful Deity, Depression. The missing part of her soul became the Solitary Deity, Isolation. The missing part of her mind became the Volatile Deity, Insanity. They were part of her, part of her own. They each knew that the others were the missing pieces towards the puzzle, something that the other needed. The Deities and Mano fought against each other many different times, and most of the time, Mano emerged victorious. Sometimes the Deities win, overtaking Mano's power, but she always came back stronger. Until they learned to co-exist. Now, Mano can bond with one of her Deity Self, and the fused power gives them new skills and abilities, the most prominent of which is that Mano's left eye would change into one of their own. Mano began a journey of bonding along with the Deities she once rejected, and it showed great results. In one of the battles, Mano was brutally wounded, until the four Deities came together and rose as one, becoming Myriad. Myriad is said to be a giant Deity, with four hands. Myriad easily defeated the opposing enemy, until their leader came by. Myriad managed to convince Mano to keep going, to keep fighting, and that they were stronger, together. And that was when Mano finally agreed, and they all became one. Mano's true form, when all of her pieces have been put together, no longer apart from each other. Seraphim, the Catastrophic Deity. Mano kept them hidden most of the time, preferring her current form, but if trouble ever ensues, or if her loved ones are ever hurt (Especially Eira) She would have no problem reverting back to Seraphim. Just be advised. Do not engage in combat with Seraphim, as Seraphim scales over many huge planets, and their immense durability and size are a wonder.
Note: This is Not Seraphim, this is Obsidian from Steven Universe. Seraphim's Design is VERY similar to Obsidian. I actually got Seraphim's idea from Obsidian. Peak character.