A whole sunshine, very bright. An extremely cute, adorable person. A person that would never fail to make you smile. Is effortlessly very funny. Someone you would feel grateful to have.
Person A: Omg, she is so adorable. I love her bright personality.
Person B: Right, he's absolutely a Dokyeom.
12 step recovery jargon referring to someone new who talks about how great life is, now that they're sober. Usually meaning that the person is out of touch with reality.
The new guy seems pretty happy for a dude who has no job, no money and no family. He must be on a pink cloud.