Sun is a pale golden she-cat with darker golden dapples and emerald green eyes.
- She was born a rogue with her brother, her brother joins RiverClan but she refuses.
- She meets a muscular tom named Sasuke and she falls in love with him. They become mates, and she soon bores one kit, Lion.
- She soon leaves Sasuke, heartbroken, to join RiverClan with her brother.
- She takes Lion to ThunderClan and he grows up there.
- Sundapple is now a RiverClan warrior.
- She seems to love Dustblaze but it also seems that he doesn't like her back.
- It turns out he does so the two become mates.
- She then sees Dustblaze with Iceshine in ThunderClan territory and she is hurt thinking he doesn't love her anymore. She then runs away being found by Solarwind then Dustblaze. Dustblaze and Sundapple argue whether to be mates or not. Dustblaze then gets really annoyed for Sundapple having mixed emotions. Sundapple thought that nobody wanted her here so she ran again but Dustblaze caught her and said he was sorry. The two stay mates and go back to the RiverClan camp.
- Sundapple then gets pains in her belly and it is shown she is having kits.
- Her kits become apprentices.
- Later, her and her mate grow apart and they break up.
- It is revealed she named Lionpaw after her former kit Lion, who became Liontooth.
- She is near the border when she sees Liontooth and Sasuke, they later admit everything to each other.
- She later leaves RiverClan to become a rogue again.
- She is later seen around by the rogues.
- One day, Sasuke asks her to join Team Sasuke, and she accepts, and Hope asks to join her "family", she replies saying she doesn't even know her.
- She later visits Lionstar often with Sasuke.
- When wolves kill a Twoleg, the rogues figure a plan, she now is currently living as a warrior in ThunderClan to help them along with Piper, Sasuke, and Piper's kits.
- She goes hunting with Sasuke and Flower and are attacked by Strike, Fang, and Rage. She battles along with the others, she hides Flower to keep her safe while she and Sasuke fight. They run off and leave. After the battle, Sasuke and herself admit they love each other and become mates.
- Whitefire: Living
- Swiftpaw: Living
- Sweetkit: Deceased, Member of StarClan
- Fernpaw: Living
- Lilackit: Deceased, Member of StarClan
- Eveningpaw: Living
- Goldenpaw: Living