Sei

Name: Sei
Native name: 이서정
Also Known as: 세이
Nationality: South Korean
Gender: Female
Born: January 7, 2000
Age: 24

Lee Seo Jeong, known professionally as Sei, is a South Korean singer, dancer and member of WEKI MEKI. She graduated from Deos Middle and High School and is enrolled in the Creative Writing program at Hanyang Women's University. Before debuting, she started out as a trainee under LOUDers Entertainment. In 2016, she participated in "Produce 101" but was eliminated in episode 5 and ranked 85th overall.

She joined Fantagio and debuted in 2017 as WEKI MEKI's vocalist and rapper with their 1st EP, "Weme", and has enjoyed moderate success and stability since then. In 2021, she had the lead role in the web drama “The Tale of Chunhyang”.

(Source: Korean = NamuWiki || Translation = MyDramaList) Edit Biography

Year	Title	#	Role	Rating
2024	Our Love Triangle Korean Drama, 2024, 10 eps Son Min Joo (Support Role)	10	Son Min Joo Support Role	7.1
2021	Cheongchunhyang Jeon Korean Drama, 2021, 1 eps Chung Chun Hyang (Main Role)	1	Chung Chun Hyang Main Role	7.4
2021	Would You Like a Cup of Coffee? Korean Drama, 2021, 12 eps So Jung (Ep. 6) (Guest Role)	12	So Jung (Ep. 6) Guest Role	8.0
2019	Be Melodramatic Korean Drama, 2019, 16 eps [Girl group idol] (Ep. 3) (Guest Role)	16	[Girl group idol] (Ep. 3) Guest Role	8.4

Year	Title	#	Role	Rating
2022	Full Profiler Season 2 Korean TV Show, 2022, 12 eps (Ep. 8) (Guest)	12	(Ep. 8) Guest	0.0
2022	We&Me Korean TV Show, 2022, 2 eps (Regular Member)	2	Regular Member	9.0
2022	Listen Up Korean TV Show, 2022, 10 eps (Ep. 4) (Guest)	10	(Ep. 4) Guest	7.9
2022	GGULlog.zam: Homecoming Party Weki Meki Korean TV Show, 2022, 8 eps (Regular Member)	8	Regular Member	0.0
2021	Back to the Idol Season 2 Korean TV Show, 2021, 10 eps (Ep.5) (Guest)	10	(Ep.5) Guest	9.0
2021	With KiKi Korean TV Show, 2021, 17 eps (Regular Member)	17	Regular Member	10.0
2021	Bread Is My Life Korean TV Show, 2021, 8 eps (Ep. 6) (Guest)	8	(Ep. 6) Guest	8.2
2021	Gossip Idle Season 1 Korean TV Show, 2021, 75 eps (Ep. 18) (Guest)	75	(Ep. 18) Guest	8.6
2021	The Stage of Legends - Archive K Korean TV Show, 2021, 10 eps (Ep. 4) (Guest)	10	(Ep. 4) Guest	8.6
2020	Ontact Fan Meeting: Weki Meki Korean TV Show, 2020, 4 eps (Regular Member)	4	Regular Member	0.0
2020	Idol League Season 3 Korean TV Show, 2020, 66 eps (Ep. 3) (Guest)	66	(Ep. 3) Guest	8.5
2020	Life Corp. Season 1 Korean TV Show, 2020, 10 eps (Ep. 7) (Guest)	10	(Ep. 7) Guest	8.6
2020	I'm Yours for 60 Minutes Korean TV Show, 2020, 10 eps (Ep. 2) (Guest)	10	(Ep. 2) Guest	5.8
2020	Good Girl Korean TV Show, 2020, 8 eps (Ep. 1-2) (Guest)	8	(Ep. 1-2) Guest	8.4
2020	Idol League Season 2 Korean TV Show, 2020, 23 eps (Ep. 13) (Guest)	23	(Ep. 13) Guest	8.1
2020	‏2020 Idol Star Athletics Championships Korean TV Show, 2020, 9 eps (Regular Member)	9	Regular Member	8.0
2019	Transonglation Korean TV Show, 2019, 67 eps (Ep. 9) (Guest)	67	(Ep. 9) Guest	8.4
2019	2019 Idol Star Athletics Championships Chuseok Special Korean TV Show, 2019, 6 eps (Regular Member)	6	Regular Member	7.9
2019	Midnight Idol Season 1 Korean TV Show, 2019, 345 eps (Ep. 215, 281) (Guest)	345	(Ep. 215, 281) Guest	8.3
2019	Q&A Machine Korean TV Show, 2019, 34 eps (Ep. 25) (Guest)	34	(Ep. 25) Guest	7.5
2019	Idol Dabang Season 1 Korean TV Show, 2019, 8 eps (Ep.4) (Guest)	8	(Ep.4) Guest	8.4
2019	School Attack 2019 Korean TV Show, 2019, 10 eps (Ep. 8) (Guest)	10	(Ep. 8) Guest	7.9
2019	We K-POP Korean TV Show, 2019, 22 eps (Ep. 10) (Guest)	22	(Ep. 10) Guest	8.4
2019	Run.wav Korean TV Show, 2019, 25 eps (Ep. 2) (Guest)	25	(Ep. 2) Guest	8.3
2019	Idol Lunch Box Korean TV Show, 2019, 10 eps (Ep. 1) (Guest)	10	(Ep. 1) Guest	0.0
2019	TMI NEWS Korean TV Show, 2019, 56 eps (Ep. 32) (Guest)	56	(Ep. 32) Guest	8.0
2019	2019 Idol Star Athletics Championships Korean TV Show, 2019, 4 eps (Regular Member)	4	Regular Member	8.1
2018	Brain-fficial Season 2 Korean TV Show, 2018, 41 eps (Ep. 28) (Guest)	41	(Ep. 28) Guest	8.0
2018	A Song for You Season 5 Korean TV Show, 2018, 10 eps (Ep. 4) (Guest)	10	(Ep. 4) Guest	7.9
2018	Quiz Room Korean TV Show, 2018, 32 eps (Ep. 15) (Guest)	32	(Ep. 15) Guest	8.0
2018	A Battle of One Voice: 300 Korean TV Show, 2018, 5 eps [Participant] (Ep. 2) (Guest)	5	[Participant] (Ep. 2) Guest	8.3
2018	300 Korean TV Show, 2018, 5 eps (Guest)	5	Guest	8.4
2018	Hidden Singer Season 5 Korean TV Show, 2018, 17 eps [Panelist] (Ep. 6) (Guest)	17	[Panelist] (Ep. 6) Guest	8.1
2018	Super TV Season 2 Korean TV Show, 2018, 12 eps (Ep. 5) (Guest)	12	(Ep. 5) Guest	8.7
2018	Idol Room Korean TV Show, 2018, 87 eps (Ep. 22) (Guest)	87	(Ep. 22) Guest	8.1
2018	Video Star Season 2 Korean TV Show, 2018, 179 eps (Ep. 164) (Guest)	179	(Ep. 164) Guest	7.8
2018	Idol League Season 1 Korean TV Show, 2018, 56 eps (Ep. 38) (Guest)	56	(Ep. 38) Guest	8.5
2018	Weki Meki Mohae? Korean TV Show, 2018, 60 eps (Regular Member)	60	Regular Member	8.6
2018	Super TV Season 1 Korean TV Show, 2018, 12 eps (Ep. 11-12) (Guest)	12	(Ep. 11-12) Guest	8.8
2017	KiKiCAM Korean TV Show, 2017, 100 eps (Regular Member)	100	Regular Member	8.3
2016	Fact iN Star Season 1 Korean TV Show, 2016, 200 eps (Ep. 131) (Guest)	200	(Ep. 131) Guest	8.3
2016	Produce 101 Korean TV Show, 2016, 11 eps (Regular Member)	11	Regular Member	8.1
2015	Knowing Bros Korean TV Show, 2015, 460 eps (Ep. 261) (Guest)	460	(Ep. 261) Guest	8.7
2013	After School Club Korean TV Show, 2013, 675 eps (Ep. 279, 305, 369, 410) (Guest)	675	(Ep. 279, 305, 369, 410) Guest	8.1
2011	Weekly Idol Korean TV Show, 2011, 700 eps (Ep. 377, 423, 539) (Guest)	700	(Ep. 377, 423, 539) Guest	8.2
2011	Immortal Songs: Singing the Legend Korean TV Show, 2011, 690 eps (Ep. 349, 407, 449-450) (Guest)	690	(Ep. 349, 407, 449-450) Guest	8.3
2010	Hello Counselor Season 1 Korean TV Show, 2010, 431 eps (Ep. 354) (Guest)	431	(Ep. 354) Guest	8.0
1998	Pops in Seoul Korean TV Show, 1998, 6000 eps (Guest)	6000	Guest	8.1