Francis has light brown skin, long dark hair, and a hooked nose. He has an intense, piercing gaze.
As Trickster, he wears a black costume with a red mask and a top hat. His mask had a mouth-hole that he would sometimes use to smoke. His jacket had a pocket he kept cigarettes in and a cellphone capable of recording video.
Francis' power enables him to swap the locations of two objects with similar mass, including himself. 
Trickster’s powers only work on targets that are both within his field of view. His speed/ease of being able to swap is dependent on distance (although not as much as one might suspect) and difference in mass – too much of one or the other and it’s not doable in any reasonable amount of time. He needs to even out any differences in mass by sucking in surrounding air, which takes time. He has a sense of how easy it would be to swap two objects at a time.
Krouse was a competitive gamer from Earth Aleph from Madison, Wisconsin. After being transferred to Earth Bet by The Simurgh, he, like the rest of the Travelers, gained his power from a Cauldron vial.
Sided with Coil when he turned on the Undersiders. When the tables were turned against his benefactor and only hope, Trickster tried to save Coil but failed. He awoke only to see evidence that the man he had put all his hope in had been murdered.
↑“It’s how he operates. I’m not saying this is usual, or that this wasn’t an extreme case, but… it’s always how he dealt with things, big or small. The worse things get, the more stubborn and cocky he gets in going up against them. It worked when we were just messing around together, just playing around. But we were never suited to be… I dunno, a family?” - Colony 15.10
↑Trickster unmasked as well. He definitely didn’t remind me of one of the jocks. His hair was longer than many girls wore theirs, he had light brown skin and an unfortunate hook nose. Combined with his intense stare, he gave me the impression of a hawk or some other bird of prey. - https://parahumans.wordpress.com/2012/07/03/plague-12-3/ Excerpt] from Plague 12.3
↑Trickster stood in the doorway, unmasked. His skin tone was darker in a way that left his ethnicity ambiguous, to the point where the boy could have been a darker skinned Caucasian, biracial, Middle Eastern or Eastern Indian. His dark hair was long, hanging to his shoulders, and a hook nose coupled with a widow's peak gave him something of a severe appearance. His eyes, normally sharp, were bleary with sleep. - Interlude 8.z
↑ The Travelers were outside the pub now, but they were taking their time leaving. Trickster was smoking a cigarette through the mouth-hole of his mask. - Hive 5.2
↑All eyes turned to Trickster. He didn't hurry to reply. He reached into the fold of his jacket, found a pack of cigarettes, tapped one out, placed it inside the mouth-slit of his mask and lit up. He placed one hand on his hat to keep it in place as he rolled down the window to blow the smoke outside. - Tangle 6.8
↑There were capes at the far end of the hallway, staring at the scene, kept out of the main triage area by a set of PRT officers. Trickster leaned against a wall with a cell phone raised, recording video. - Extermination 8.7
↑ 9.09.1"And Trickster, their leader, is a teleporter. Not just himself. He can make anything he can see teleport. Except there's a special rule to his power, a restriction. He has to swap the places of two things with roughly equivalent mass. The bigger the difference in mass, the slower the swap and shorter his range." - Tangle 6.1
↑Trickster’s powers are sight dependent, and his speed/ease of being able to swap is dependent on distance (not as much as one might suspect) and difference in mass – too much of one or the other and it’s not doable in any reasonable amount of time. The problem here is both awareness (he doesn’t necessarily know what’s happening) and sight: He can’t see Noelle (who is at Coil’s base with Oliver & Genesis) or the Slaughterhouse Nine (who are upstairs, while he’s downstairs talking with Noelle via. webcam). - Comment by Wildbow on Plague 12.3
↑Trickster - Line of sight, swaps everyone and everything, comingles swapped matter - person + mailbox = two mashed together abominations of flesh and mailbox, slowly dying as organs fail. PRT van + PRT van = two mashed together heaps of metal with people crushed inside, very possibly setting fire or exploding given friction of metal on metal and leaking gasoline. Size/mass/density sense that normally allows Trickster to gauge how swappable things are is extended to give knowledge of everyone and everything within a one-mile radius. Reflexes amped up. Effectively navigates a battlefield by swapping himself instantly and repeatedly, mapping out routes in advance, leaving mangled destruction in his wake, flanking and hiding. - Characters as S-Class Threats Comment by Wildbow on Reddit.
↑Trickster, for his part, didn’t even flinch as she closed the distance between the two of them, stepping within a few feet of him.
It would be all too easy to just snap her tongue at him. Catch him, swallow him.