| idol_id | 541 |
| Selca owner | ngt48_rittan |
| Pop type | J-Pop |
| Stage name (romanized) | Rittan |
| Stage name (original) | りったん |
| Real name (romanized) | Sugahara Riko |
| Real name (original) | 菅原りこ |
| Birth date | 2000-11-23 (age 24) ▲ ▼ |
| Chinese zodiac sign | 🐉 Dragon |
| Western zodiac sign | ♏|♐ Scorpio or Sagittarius |
| Hometown | Niigata Prefecture |
| Height | 155.0cm (5'1") ▲ ▼ |
| Weight | |
| Blood type | O |
| Debut date | 2015-08 ▲ ▼ |
| Country of origin | 
Japan |
| Name | Company | Fandom | Debut date | Disbandment date | Current member | |
|---|---|---|---|---|---|---|
|
NGT48 | AKS | 2015-08-21 | No |