Disclaimer: Still don't own Lucifer.

A/N: What if Michael met Trixie? Set during 5 x03. Plus, I kinda found it weird in 5x04 Lucifer actually expected Chloe and Trixie to come for game night when Chloe wasn't on great terms/wanted space from him and we hadn't seen him with Trixie until she showed up to his penthouse. So I filled in why that may have been.

Michael went into the police interrogation room to look for Dan. Sure Chloe found him out but he was pretty sure Dan did not know Lucifer was the Devil and could be a valuable tool in using him to ruin Lucifer's life. He was dressed in a suit like Lucifer. The plan currently was to make Lucifer seem more erratic and see if that would push Dan into demanding he stay away from the child and throw a wrench into Chloe/Lucifer. He hadn't paid much attention to the child, Trixie. He knew she was really named Beatrice and Lucifer had a disdain for children so he probably put up with her as little as possible. He hadn't planned on them meeting.

The door opened and it wasn't Dan. Or Chloe. Or any adult. "Mom? Oh! LUCIFER!" Trixie ran to the man and hugged him.

Michael gently, but awkwardly, touched the top of her head and guided her arms off him. "Hi there."

Trixie eyed the man suspiciously. There were no cringing sounds or name calling, and they hadn't seen each other in months. "Lucifer, it's been so long. Are you back for good?"

"Oh you know me, Lucifer," Michael did his best casual British accent. "I come and go as I please. Actually, I have important things to do so I'll be seeing you another time, Rugrat."

Alarm bells went off in Trixie's head. Lucifer would never say Rugrat. "Lucifer I missed you," Trixie replied. "Don't you want me to tell you what you've missed out on?"

"Another time, okay?"

Lucifer would want as much information on what he's missed out on as possible, and if Mom was very upset with him. Something was very wrong. "Maybe during game night? The next time we play Connect Four we can catch up?" The trap was set.

"Sure," Michael was curt. Lucifer did a game night? Had he spent too much time focusing on watching the adults at work? Who have these humans turned his brother into?

Monopoly was their game. Trixie went into the side pocket of her backpack and pulled out pepper spray. Maze taught her how to aim high. "Are you Lucifer with a head injury or are you an evil twin? I've seen shows that have evil twins."

Michael was in shock. What had happened? "Me? Evil?"

"What's my favorite cake?" Trixie grilled.

"Pardon me?"

"My favorite cake, Lucifer."

"...Chocolate." The hesitation before his answer did not help him.

"Sounds like you could have been guessing. The real Lucifer wouldn't sound like he's guessing."

"He's Lucifer and you think I'm the evil twin?!" Michael was annoyed. "What is it with you humans and him?"

"So you're not Lucifer!" With that, Trixie sprayed her pepper spray and ran.

"URCHIN!" Lucifer jovially yelled in the hallway. "I hear you're-" Lucifer stopped in his tracks when Trixie was running towards him, clearly distressed.

"LUCIFER!" Trixie yelled, running to him. She went to put her hands on him and he made various sounds of protest and jumped out of her grasp. "You have an evil twin and you didn't tell me? He wanted me to think he was you! And he's bad at it."

"When did you see him?"

Trixie pointed in the direction of the interrogation room. "He's in there."

Lucifer furiously ran into the room but Michael was gone. He probably flew away. He'll deal with him later. "Did he hurt you?" Lucifer asked, his voice low but restraining his rage.

"No. He didn't want to talk to me but he also wanted me to think it was you who didn't want to talk to me. But I knew he wasn't you and I pepper sprayed him. He called me Rugrat," Trixie told Lucifer.

Lucifer scrunched his face and made an 'uhg' sound. "Rugrat? Does he think I do carpools? I had a short lived Dansformation but even then I wouldn't say something so… lame." A small smile of pride crept on Lucifer's face. "You really pepper sprayed him?"

"Uh-huh. He also thought we played Connect Four," she reported.

"Connect Four? What economic use does that have to carry into the world of business and property management?" Lucifer scoffed. The two went back to Chloe's desk. "Parasite, here," Lucifer tossed her a Yankee Doodle cupcake from the vending machine and two fifty dollar bills. "I just heard you were in the building so I had to improvise. The cupcake and one fifty is for missing your Spawned Day and the other fifty is a pre-payment on some questions I need to ask you."

"Thank you!" Trixie went for a hug but Lucifer moved back.

"Let's not get carried away," Lucifer said.

"You left without saying goodbye."

"I did," Lucifer confirmed. "I had to do it that way. But I'll get you another cupcake for that one."

"Eh," Trixie said. "They're really cutting back on the cream in these." She showed him the inside.

"Those cheap bastards!"

"You really should have mentioned you have an evil twin. I missed you."

"Well, we can get back to game night effective immediately." Lucifer sighed. "It's been forever since we had one." Not that he missed it the entire time he was in hell and would set up the monopoly board as soon as possible. "As for the case of the evil twin I really never thought he'd be relevant. His name is Michael and he lives far away. Perhaps I should have. If you see him again leave immediately, find me," Lucifer paused to consider he may be going back to hell since Amenadiel probably won't stay forever, "or your mother or Amenadiel or Maze, we all know about him. So, he's bad at being the devil you know?" But if he had the chance to make Michael pay he was going to make the most of it.

"Terrible," Trixie confirmed. "His acting needs work." Trixie looked aggrieved. "Grandma tried to get me to go on another acting audition again when you were gone. I need a game night."

Lucifer clucked his tongue in disapproval. "Much like my dysfunctional family, Hollywood couldn't handle you."

Lucifer pointed to one of the fifty dollar bills and Trixie began to tell Lucifer everything he'd missed out on, starting with Chloe's mood the night he left and if she knew where Eve went, just as Trixie knew the real Lucifer would want to get to immediately.

Finished. Hope y'all liked this one shot.