Constantin Valdor/ Constance Valdor

She is a Custodes of the year 25K, born before the Emperor and Slaanesh fused into 1 being. The Emporer could sense Constantin was special even when he was a baby. He knew on sight he wanted to make Constantin a Custodes and make him their leader. The Emporer was not wrong as he was great as both a warrior and a leader.

Despite being in massive golden armor, he was able to sneak into an enemy base and asked the leader what they'd like their last words to the Emperor to be. During the unification wars he met with someone turing the Thunder Warriors away from the Emperor. He had a talk with this person and conviced them not to be a traitor anymore.

He is a monster in combat, being able to tear through army's of tech barbarians with ease. The Emperor was worried Constantin would lose his empathy, so he gave him a spear that would make him see the soul's of every human he slays. Constantin accepted this burden without complaints.

After the unification war's, the Emperor created the Primarch's. Constantin disagreed with this as they would most likely be unpredictable, however he never said this to the Emperor's face.

Once the Emperor and Slaanesh fused into the Empress of Pleasure, Constantin was the 1 to order the attack on her. Once he realized this being was a fusion between the Emperor and something else, he ordered the Custodes to stop the attack. He ordered half of the Custodes to search the galaxy for anything to unfuse the Emperor from Slaanesh. Himself and the rest of the Custodes stayed behind to protect the Empress since if she died no doubt the Emperor would die aswel.

She changed Constantin into a futa and renamed her Constance.

She didn't accepted the Empress and would only fallow orders she thought the Emperor would have made himself. Constance never made a harem and didn't give her virginity to the Empress yet. Constance stayed by the Empresses side throughout the Crusade to reclaim humanitys lost colonies.

Valdor was around during the 30k area but she had noticeably aged into a milf. Even though Constance is not a Chaos Custodes, she was able to defeat many Primarch's in sparing matches. Even Horus himself. This is because she's more experienced and more skilled then the Primarch's. However if she was in a real life or **** fight with a Primarch, she would be overwhelmed by their power.

In Canon, Valdor and some other Custodes where sent with Leman to deal with Magnus. In this timeline Erda was sent after Magnus instead. So instead she helps the other Custodes fight the demons from the failed Wep Way gate emidietly rather then joining the fight once returning from dealing with Magnus. So the Custodes actually have an easier time dealing with the demons.

In the original timeline, Valdor took the Emperor's seat in the war council since the Emperor was stuck on the chair. In this time line, the Empress can create an astral projection of Slaanesh and lead through it. So Constance would instead only lead the Custodes rather then all of humanitys army's.

The trators never made it to Terra since there are far less traitor Primarch's then in the original timeline.

In the original timeline, Valdor left and became a loyalist warp entity called the King in Yellow. In this timeline she stays by the Empresses side. She finally accepts that the Emperor and Slaanesh will never be unfused. So she becomes a Chaos Custodes like the rest, making her as powerful as a Primarch and making her physically 18 again. She finally gave her virginity to the Empress as a sign of loyalty. However she did not join the Empresses harem. Instead she joined Lena Russ's harem as they had a close bond.

In the year 40k, Constance was 1 millisecond too slow during a blood game. She became an Eye's of the Empress and named Ann Valoris as her successor. She watches for any danger to the Empire on a low population planet near Fenris, however she is still very respected by the Empress and the other Custodes.

Sometimes Ann will come visit and spare. Even though Ann has better gear on, Constance still gives her a rough time in her sparing matches.