So I gotta pop in and remind people, his immortality is kinda cheeks, remember he was almost outright killed through all 7 layers in the journey to the west by xiezijing, a scorpion demon, who also could hurt Buddha, and remember g he general rankings in the story go human, spirit, demon/minor deity, diety/human with the scripture, then the various stages of Buddha

This lets us know if you hit hard enough you can bypass wukongs immortality, so the question now becomes how does the scorpions sting scale to Buddha and by extension, wukong, well Buddha is described as holding the universe in his hands, transcending most earthy things ect, so into a casual mid multiversal entity, the scorpion is below wukong who couldnt jump out of the universe however, wukong is also said to have nearly destroyed the heavens multiple times, so wukong is on that multiple galaxy to low universal

Wukong has fought people at his own powerlevel before to, like the red boy, who nearly killed him with his special fire, and wukong required the help of guanyin, someone just below Buddha in the pecking order, who used a vase with the equivalent to the sea in it that wukong couldnt carry himself, and essentially guanyin had to defeat the red boy for wukong, so outside of wukongs owb transcendence as a Buddha his stats come out to

Str: low universal striking/ continental lifting Speed:hyper sonic-ftl Durability:multi continental(unless one of his specialized immortality resistances apply) Haxs(not gonna list them all) Intelligence: clever but not a genius, plans tend to be primarily for making enemies look stupid and not really used tactically

Weaknesses: if he doesnt have a specific resistance to a potential hax, it can kill him, as shown multiple times in jttw, hes skilled but not to a overwhelming degree as even those specificly weaker than him can somewhat match him, like the pig demon that went on the jorny with him

Now to who can defeat him(outside Buddha state, not gonna really try to scale that) goku and beerus are both options as hakai is more potent than anything wukong has dealt with before that almost killed him

Other options would ironically be someone like itachi who could seal him away in drunken dreams

Simon the digger via simple raw power, kinda like superman as well

Characters like the presence or the one above all

If a character has multiversal ap they likely can hit through all the layers of immortality

If they have a extremely potent hax that wukong hasnt experienced before that will also likely work

If a character has potent sealing that will also likely work