| Person | Type | Job | Role(s) | Episodes |
|---|---|---|---|---|
 Bayani Agbayani | Cast | Actor | Self - SING-vestigator | 130 |
 John Arcilla | Cast | Actor | Self - Guest | 1 |
 Nikki Valdez | Cast | Actress | Self - Guest | 1 |
 Vina Morales | Cast | Actress | Self - Guest | 1 |
 Ice Seguerra | Cast | Actor | Self - Guest | 1 |
 Andrew E. | Cast | Actor | Self - SING-vestigator | 95 |
 Angeline Quinto | Cast | Actress | Self - SING-vestigator | 225 |
 Bituin Escalante | Cast | Actress | Self - Guest | 1 |
 Long Mejia | Cast | Self - SING-vestigator | 125 | |
 Luis Manzano | Cast | Actor | Self - Host | 225 |
 Martin Nievera | Cast | Self - Guest | 1 | |
 Raymond Lauchengco | Cast | Self - Guest | 1 | |
Roselle Nava | Cast | Self - Guest | 1 | |
 Alex Gonzaga | Cast | Actress | Self - SING-vestigator | 70 |
Frenchie Dy | Cast | Actress | Self - Guest | 1 |
 Jerald Napoles | Cast | Actor | Self - Guest | 1 |
 Kean Cipriano | Cast | Actor | Self - SING-vestigator | 70 |
Robi Domingo | Cast | Self - Guest | 1 | |
 Kim Molina | Cast | Self - Guest | 1 | |
 Pops Fernandez | Cast | Actress | Self - Guest | 1 |
 Nikko Natividad | Cast | Actor | Self - SING-vestigator | 30 |
 Lassy Marquez | Cast | Actor | Self - SING-vestigator | 130 |
 MC Calaquian | Cast | Actor | Self - SING-vestigator | 130 |
Lyca Gairanod | Cast | Self - Guest | 1 | |
Wacky Kiray | Cast | Self - SING-vestigator | 70 | |
 Darren Espanto | Cast | Self - Guest | 1 | |
Bamboo Mañalac | Cast | Actor | Self - Guest | 1 |
 Seth Fedelin | Cast | Actor | Self - Guest | 1 |
Criza Taa | Cast | Actress | Self - Guest | 1 |
Karina Bautista | Cast | Self - Guest | 1 | |
Aljon Mendoza | Cast | Self - Guest | 1 | |
Negi | Cast | Self - SING-vestigator | 155 | |
 KaladKaren | Cast | Actress | Self - SING-vestigator | 55 |
Jayda Avanzado | Cast | Self - Guest | 1 | |
Kice | Cast | Actor | Self - Guest | 1 |
| Person | Type | Job | Role(s) | Episodes |
