sylceon: 100%, she could kill him easily too
sylcmori: 87%, depends if she has her wildfire knife
SIS: 8%, he's weak but he has a strategy sometimes
kitty: 91%, she's literally an angel that has half of the control of seeing if people can die (plus it's an htf character yada yada she will just respawn)
Limitless Reaper: 99.99999%, if it wanted to it could just eat the Traveler
Dr. Desolation: 85%, he can time travel, which could lead to clever attacks
Bladesmith's Apprentice: 75%, she carries various magic gadgets on her person, which could give her an edge
Literally all my other OCs: 15-0%
The Vices would probably average about 90%, because they could weaken the Traveler by tempting him
Inverse Montie might be about 50% because of her godlike powers
Blook's got 50,000 attack and defense, and 100,000 HP. He mostly uses fire, ice, electric, and wind elements against foes. He's also pretty quick, being able to teleport when needed.
Ok but we also have Shadow Soul, this mf.
He's a shadowy orb that may not look strong, but totally it.
SS's stats are basically Blook's stats but add 3 extra 0's, and his attacks mostly consist of shadow magic.
Inkmatas: 75% chance
Peyton: also 75% chance
Xander and Kinyani: 75% (50% when alone)
Mirai: 49% chance
Wymar, Nameless prince, and Zhandou: 100% (they all can respawn)
Limitless Devourer: 100% (it just snaps Traveler out of existence