Zagnit was the original voice of Professor Oak in the English 4Kids dub of Pokémon. He is often credited as Stan Hart. He was recast after Season 8, but returned in Season 15.

In Pokémon Snap, he played Professor Oak.

Role	Series	Title
Voice Actor Professor Samuel Oak	SL 1	Pokémon - I Choose You!ポケモン！きみにきめた！Pokémon! I Choose You!
Voice Actor Professor Samuel Oak	SL 2	Pokémon Emergencyたいけつ！ポケモンセンター！Confrontation! Pokemon Center!
Voice Actor Professor Samuel Oak	SL 13	マサキのとうだい/Masaki's Lighthouse/Mystery at the Lighthouse
Voice Actor Professor Samuel Oak	PM 18	Beauty and the BeachアオプルコのきゅうじつHoliday at Aopulco
Voice Actor Professor Samuel Oak	SL 25	Don't Get Mad, Okorizaru!/Primeape Goes Bananas/おこらないでねオコリザル！
Voice Actor Professor Samuel Oak	SL 30	コイルはでんきネズミのユメをみるか!?/Do Coil Dream of Electric Mice!?/Sparks Fly for Magnemite
Voice Actor Koga	SL 32	The Ninja Poke-Showdown/セキチクにんじゃたいけつ！/Sekichiku Ninja Showdown!
Voice Actor Professor Samuel Oak	SL 50	トゲピーはだれのもの!?/Whose is Togepi!?/Who Gets to Keep Togepi?
Voice Actor Professor Samuel Oak	SL 67	Rival Showdown! The Okido Laboratories/ライバルたいけつ！オーキドけんきゅうじょ/Showdown at the Poke Corral
Voice Actor Professor Samuel Oak	SL 68	ヤドンがヤドランになるとき/When Yadon Becomes Yadoran/The Evolution Solution
Voice Actor Professor Samuel Oak	SL 70	しょくぶつえんのクサイハナ/The Kusaihana of the Botanical Garden/Make Room for Gloom
Voice Actor Professor Samuel Oak	SL 74	げきとつ！ちょうこだいポケモン/Fierce Battle! Pokémon of Yore/The Ancient Puzzle of Pokemopolis
Voice Actor Professor Samuel Oak	SL 75	ガラガラのホネこんぼう/Bad to the Bone/Garagara's Bone Club
Voice Actor Professor Samuel Oak	SL 77	The Pokémon League Begins! The Water Field!/Round One - Begin!/ポケモンリーグかいまく！みずのフィールド！
Voice Actor Professor Samuel Oak	SL 79	くさのフィールド！いがいなきょうてき！/The Grass Field! A Surprisingly Strong Opponent!/Fourth Round Rumble
Voice Actor Professor Samuel Oak	SL 80	ライバルとうじょう！/A Friend In Deed/The Arrival of a Rival!
Voice Actor Professor Samuel Oak	SL 81	Friend or Foe Alike/Sekiei Stadium! VS Hiroshi!/セキエイスタジアム！VSヒロシ！
Voice Actor Professor Samuel Oak	SL 82	Friends to the End/Pokémon League! Final Battle!/ポケモンリーグ！さいごのたたかい！
Voice Actor Professor Samuel Oak	OI 1	Masara Town! Setting off on a New Trip!/マサラタウン！あらたなるたびだち/Pallet Party Panic
Voice Actor Professor Samuel Oak	OI 3	Pokémon of the South and the GS Ball/なんごくポケモンとＧＳボール/Pokeball Peril
Voice Actor Professor Samuel Oak	OI 4	Save Laplace!/ラプラスをたすけろ！/The Lost Lapras
Voice Actor Professor Samuel Oak	OI 5	オレンジリーグ！ナツカンジム！/Orange League! Natsukan Gym!/Fit to be Tide
Voice Actor Professor Samuel Oak	OI 6	きえたポケモンたちのナゾ！/Pikachu Re-Volts/Mystery of the Missing Pokemon!
Voice Actor Professor Samuel Oak	OI 8	ピンクのポケモンじま/In the Pink/Island of the Pink Pokemon
Voice Actor Professor Samuel Oak	OI 10	おどる！ポケモンショーボート！/Dance! Pokemon Showboat!/Stage Fight
Voice Actor Professor Samuel Oak	OI 15	A Shipful of Shivers/The Ghost Ship and the Ghost Pokemon!/ゆうれいせんとゆうれいポケモン！
Voice Actor Professor Samuel Oak	OI 17	Strike - A Warrior's Pride/ストライクせんしのほこり/Tracey Gets Bugged
Voice Actor Professor Samuel Oak	OI 22	The Monster in the Underground Tunnel!?/ちかどうのかいぶつ!?/The Mystery Menace
Voice Actor Professor Samuel Oak	OI 31	ウィナーズカップ！フルバトル６VS６!!/Winners' Cup! Full Battle 6 VS 6!!/Hello Pummelo
Voice Actor Professor Samuel Oak	OI 33	Goodbye, Laplace!/さよならラプラス！/Viva Las Lapras
Voice Actor Professor Samuel Oak	OI 35	かえってきたマサラタウン！/Masara Town to Which We've Returned!/A Tents Situation
Voice Actor Professor Samuel Oak	OI 36	ライバルたいけつ！サトシVSシゲル!!/Rival Showdown! Satoshi VS Shigeru!!/The Rivalry Revival
Voice Actor Professor Samuel Oak	GS 1	Dont Touch That 'Dile/ワカバタウン！はじまりをつげるかぜのふくまち！/Wakaba Town! The Town Where Winds of New Beginnings Blow!
Voice Actor Casey's Grandfather	GS 2	ルーキーのチコリータ！/The Rookie's Chicorita!/The Double Trouble Header
Voice Actor Professor Samuel Oak	GS 11	ヌオーとＧＳボール!?/Once in a Blue Moon/Nuoh and the GS Ball!?
Voice Actor Professor Samuel Oak	GS 20	チコリータはごきげんななめ!?/Chikorita's Big Upset/Chikorita is in a Bad Temper!?
Voice Actor Professor Samuel Oak	GS 27	Goin' Apricorn/Kunugidama and Bonguri Fruit! Fight on the Mountain in Back!!/クヌギダマとボングリのみ！うらやまのたたかい!!
Voice Actor Professor Samuel Oak	GS 29	Ubame Forest! Search for Kamonegi!!/ウバメのもり！カモネギをさがせ!!/A Farfetch'd Tale
Voice Actor Professor Samuel Oak	GS 30	ソーナンスとポケモンこうかんかい!!/Sonansu and the Pokémon Trade Meet!!/Tricks of the Trade
Voice Actor Professor Samuel Oak	GS 31	もえろゼニガメだん！ほのおのように!!/Burn on, Zenigame Gang! Like a Flame!!/The Fire-ring Squad
Voice Actor Professor Samuel Oak	GS 44	Air Time!/ラジオとうのたたかい！じくうをこえて!!/Battle at the Radio Tower! Surpass Time and Space!!
Voice Actor Professor Samuel Oak	GS 47	Fossil Fools/Fossil Pokemon Park! Ruins of Alph!!/こだいポケモンパーク！アルフのいせき!!
Voice Actor Professor Samuel Oak	GS 78	The Ring Masters/オーダイルVSカメックス！すもうバトル!!/Ordile VS Kamex! Sumo Battle!!
Voice Actor Professor Samuel Oak	GS 79	The Poké Spokesman/ポケモンとはなせます!?ポケモンのことばポケモンのきもち！/He Can Talk To Pokémon!? Pokémon's Words, Pokémon's Feelings!
Voice Actor Professor Samuel Oak	Movie 2	The Explosive Birth of the Mythical Pokémon Lugia/Pokémon the Movie 2000 - The Power of One/幻のポケモン ルギア爆誕
Voice Actor Professor Samuel Oak	Movie 3	Pokémon 3: The Movie: Spell of the Unown結晶塔の帝王 ＥＮＴＥＩThe Emperor of the Crystal Tower, Entei
Voice Actor Professor Samuel Oak	Movie 4	Pokémon 4Ever: Celebi, the Voice of the Forestセレビィ時を超えた遭遇Celebi A Timeless Encounter