1. Uranai Obaba- A Fortune Teller and also Master Roshi's older sister. She can travel safely between the Earth (Living Universe) and the gates of Heaven and The Underworld (The Spirit Realm). Apparently, she was at the Spirts Realm during the dangerous times, as we see she brings back Vegeta for 1 day. She also doesn't have a Halo (a sign that one is dead).
2. Enma-Daiou- Gateskeeper and judge of the Dead, he was never involved in any fights nor was he close to any of the battles in order to get hurt. The only question is... Can we say that he is really "alive"?
3. Mr. Satan- Surprisingly this arrogant, but lucky fool, survived through many amazing and powerful opponents. He nearly died once when he got shot once, but he was healed by Buu just in time.
4. South-Kaio- The only other Kaio who was introduced in the series. He was only showed once, and has never seen battle of the magnitude of Goku-tachi (Goku and others).
5. Kaioshin- The only Kaioshin who survived an encounter with Majin Buu. He just got Lucky. He almost died once, but was found and ressurected by Kibit just in time.
6. Mr. Buu- The Fat Buu that we were introduced to, he was absorbed by Super Buu and later almost killed by True Buu.
7. Pan, Bra, Ubuu (and all the others who were born after the Buu Saga)- Since they were born after the Buu Saga they were never killed.