Li Tianchen

Control

By touching one or more people, he is able to put them in an immediate state of trance. Said person will follow orders given from him. The trance can be broken if the victim is separated from him. By controlling other ability users, he may indirectly use their powers.

Possession

By using a photo of someone, while holding his sisters hand, he can use her power to indirectly control others. He may possess them in the present remotely. Like Cheng Xiaoshi, he retains the physical abilities of his original body, and is able to move even when the host is paralyzed, as he did with Liu Min.

As a child, he was brash and abrasive but had a caring side that was evident in how protective he was of his sister, Li Tianxi. He had a strong sense of justice and disliked people who pretended to be kind (like his father).

In the present he is cruel, opting to cause maximal pain to Lu Guang for foiling his plans to capture Cheng Xiaoshi, and also seems to be the one who possesses anyone we see with red eyes such as Emma and Qiao Ling.

Tianchen has pink short, spiky hair. He also has naturally pink eyes. His outfit consists of a lilac blue jacket that has yellow, pink, and white accents, on top of a yellow hoodie that has pink and blue accents. He wears white shorts, long white socks, and lilac blue and pink shoes.

When disguised as Li Tianxi, he wears a mask and a wig in order to hide his true identity. He also wears a pink hoodie, pink shirt, and pink shoes.

Li Tianxi is his twin sister. He is very protective of his sister, reprimanding the neighbor when he touches her and shielding her from his father's abuse. He has also went out of his way to learn sign language in order to teach her how to communicate.

Liu Xiao
Li Tianchen and Liu Xiao met as children at a park. Xiao helped Tianchen get his ball from the fountain, and inspired him to be brave and stand up for himself. He later takes this advice and tries to stop his father from hitting his mother. They meet up in the same park years later, where Tianchen gives him Liu Min's phone. Xiao offers to let Tianchen help in his plan[1], and he agrees, leaving his phone and past life behind. Tianchen seems to think highly of him, since he takes Xiao's advice and leaves with him.

Qian Jin
Qian Jin adopted and raised Li Tianxi and her brother following their parents' deaths. The two worked for him, with Tianchen helping Qian Jin murder his targets and Tianxi being an unknowing accomplice through her powers. However, after aiding in the murder of Chen Bin, Li Tianxi ran away and eventually ended up helping Cheng Xiaoshi, Lu guang, and Qiao Ling to stop Qian Jin's plans, an act that Qian Jin saw as a betrayal.

Li Tianchen (under the guise of his twin sister) enters the police department and turns themself in. They say that they will only speak with Cheng Xiaoshi.

Li Tianchen demands for all cameras to be removed. When Cheng Xiaoshi enters, Li Tianchen pats down Cheng Xiaoshi to ensure there are no listening devices (missing one that was hidden in his jacket which others are listening in on) but finds his phone. Cheng Xiaoshi takes it outside and gives it to one of the security guarding the door.

This plan is to eventually take control of Cheng Xiaoshi (and Wang Juan) to leave the Police station. Li Tianchen tries to capture Cheng Xiaoshi for his timetraveling abilities to make him alter the past.