Kenji Natthapong Thonguthaisiri

Name: Kenji Natthapong Thonguthaisiri
Native name: เคนจิ นัฐพงศ์ ทองอุทัยศิริ
Also Known as: Natthaphong, Ken, KJ
Nationality: Thai
Gender: Male
Born: July 27, 2005
Age: 21

"Kenji" Natthapong Thonguthaisiri is a member of the co-ed group ALTERS (อัลเตอร์ส) under XEBIS Entertainment (ซี บิส เอ็นเทอร์เทนเมนท์). They made their debut on December 12, 2025, with their first single "Giggle Wiggle."

(Source: kisskh) Edit Biography

Year	Title	#	Role	Rating
2026	Cupid Wall – Love at Post Sight Thai Drama, 2026, 52 eps Wine (Main Role)	52	Wine Main Role	6.9

Year	Title	#	Role	Rating
2026	3Fight3 Basket Boy Season 2 Thai TV Show, 2026, 10 eps [Halftime show artist] (Ep. 1, 6) (Guest)	10	[Halftime show artist] (Ep. 1, 6) Guest	7.9
2022	Alpha Lab Thai TV Show, 2022, 22 eps [Contestant] (Regular Member)	22	[Contestant] Regular Member	7.9
2022	Project Alpha Thai TV Show, 2022, 12 eps [Contestant] (Regular Member)	12	[Contestant] Regular Member	8.2
2021	T-Pop Stage Show Thai TV Show, 2021, 225 eps (Ep. 162, 180, 216) (Guest)	225	(Ep. 162, 180, 216) Guest	0.0
2021	Talk with ToeyS Thai TV Show, 2021, 173 eps (Ep. 86) (Guest)	173	(Ep. 86) Guest	8.3
2020	The Wall Song Thai TV Show, 2020, 325 eps (Ep. 263, 279, 300) (Guest)	325	(Ep. 263, 279, 300) Guest	8.1

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