Ben Linus
Played by Michael Emerson.
Ben Linus

Ben originally introduced himself to the castaways as "Henry Gale".

Regular

Lost

055
A Tale Of Two Cities
056
The Glass Ballerina
057
Further Instructions
058
Every Man For Himself
059
The Cost Of Living
060
I Do (Fall Finale)
064
Not In Portland
065
Flashes Before Your Eyes
066
Stranger In A Strange Land
067
Tricia Tanaka Is Dead
068
Enter 77
069
Par Avion
070
The Man From Tallahassee
071
Exposť
072
Left Behind
073
One Of Us
074
Catch-22
075
D.O.C.
076
The Brig
077
The Man Behind The Curtain
078
Greatest Hits
080
Through The Looking Glass (I)
081
Through The Looking Glass (II)
084
King of the Castle
087
Room 23
096
The Beginning of the End
097
Confirmed Dead
098
The Economist
099
Eggtown
100
The Constant
101
The Other Woman
102
Ji Yeon
103
Meet Kevin Johnson
104
The Shape of Things to Come
105
Something Nice Back Home
106
Cabin Fever
107
There's No Place Like Home (I)
108
There's No Place Like Home (II)
109
There's No Place Like Home (III)
110
Because You Left (I)
111
The Lie (II)
112
Lost: Destiny Calls
113
Jughead
114
The Little Prince
115
This Place Is Death
116
316
117
The Life and Death of Jeremy Bentham
118
LaFleur
119
Namatse
120
He's Our You
121
Whatever Happened, Happened
122
Dead is Dead
123
Some Like it Hoth
124
The Variable
125
Follow the Leader
126
The Incident (I)
127
The Incident (II)
129
LA X (I)
130
LA X (II)
131
What Kate Does
132
The Substitute
133
Lighthouse
134
Sundown
135
Dr. Linus
136
Recon
137
Ab Aeterno
138
The Package
139
Happily Ever After
140
Everybody Loves Hugo
141
The Last Recruit
143
Across the Sea
144
What they Die For
145
The End (I)
146
The End (II)

Guest

Lost

043
One Of Them
044
Maternity Leave
045
The Whole Truth
046
Lockdown
047
Dave
048
S.O.S.
050
Two For The Road
054
Live Together, Die Alone (II)