|“||It's your worst fear. A giant snake monster. Sunikura!||„|
|~ The snake introduces herself.|
Sunikura is a giant snake who appeared in Hi Hi Puffy AmiYumi and its segment Super Zero.
When Atchan was staying in the tour bus with Ami, Yumi and Kaz, he tells them about Sunikura. Later on, Sunikura kidnaps both Ami and Kaz. Yumi gets captured when she tries to rescue them, so Atchan rescues them. He knocks himself out when trying to fight Sunikura, but he gets back up when she falls down laughing because she couldn't believe Atchan is her feared nemesis. Atchan frees Ami, Yumi and Kaz from the cage Sunikura puts them in and they run away when Sunikura tries to stop them from escaping. She ends up bumping her head in her lair and gets crushed by many falling rocks.
- She is voiced by Grey DeLisle.