Juxtaposer

[Ernesto]

1. A person who pretends to hate something most people like (or [vice versa]), simply because they think it will make them a more interesting or unique person overall.

2. A person who will change their opinion of something [on a whim] to match someone who (they [admire] or look up to) believes something else of it.

[Merna]

One who places contrasting objects [side by side].

One who stands [amid] a [vividly] contrasting scene or environment and attempts to utilize the chamelion effect.

[Couch Potatoe]

someone who is [legit] when one-on-one, but isnt true to their [ideals] when around other people to try to [impress] them