Hass (はっす Hassu) is one of Rikka Takarada's closest friends.
After being told of Rikka and Yuta Hibiki together at the 7-21 shop, she and Namiko frequently tease Rikka about it. However, the day after Ghoulghilas' attack and Gridman's appearance, she seems to have forgotten everything about them and when questioned about some missing classmates, she did not know who they were either. This routine repeated after each kaiju attack.
- Height: 155 cm
- Weight: Unknown
- Age: 15 years
- Date of Birth: 24 March, 2003
- Blood Type: A
- Her design is based off of SG Soundwave from Transformers Shattered Glass, with a blanket that references SG Ravage.
- Her name may be a reference to Hasbro, one of the companies that created Transformers.
- She has a YouTube channel under the name Hassun (はっすん
- Her flu mask is a reference to the fact that Soundwave (and possibly most of his incarnations) wear mouthplates.
- SG Soundwave worked as the Decepticon's communication officer, which translates into Hass' YouTuber life as Hassun.
- She is usually seen with a flu mask and feels disgusted towards anyone who is curious as to how she looks like when not wearing it.
- Yuta Hibiki was on the receiving end of this response when he admitted he wanted to see what Hass looked like without the mask.