chuggaaconroy | All of Chuggaaconroy's Pokémon Black 2 & White 2 Bios @chugga | Uploaded August 2024 | Updated October 2024, 5 days ago.
Feels odd to refer to myself in the third person, but I wanted the title consistent with all the compilations that already exist!
I couldn't get every timestamp in the description. It's continued below in a pinned comment.

Absol – 2:14:39 / Absol [Hidden] – 2:53:29
Alakazam – 4:07:49
Alomomola – 1:43:01
Ambipom – 4:06:46
Amoonguss – 2:24:03 / Amoonguss [Hidden] – 2:33:56 / For some reason I gave Amoonguss another bio that has no new information at 3:50:16
Aron – 1:44:44
Audino – 20:14
Axew – 1:45:33
Azelf – 3:24:52
Azurill – 14:06
Bagon [Hidden] – 3:52:18
Baltoy – 1:38:14
Banette – 2:02:01
Basculin [Both Forms] – 1:39:02
Beartic – 3:28:00 I got the ability wrong, and basically everything else too. Thanks The Legendary Nic for pointing this out!
Beedrill [Hidden] – 3:50:35
Beldum [Hidden] – 3:05:16
Bibarel [Hidden] – 3:55:02
Boldore – 1:32:46
Bouffalant [Hidden & First Appearance] – 2:29:31 / Bouffalant [Normal & Second Appearance] – 2:51:48
Breloom [Hidden] – 3:50:24
Bronzor & Bronzong – 2:54:12
Bronzor [Hidden] – 3:02:30
Buizel & Floatzel – 1:40:45
Buneary & Lopunny – 44:36
Braviary [Hidden] – 49:07
Butterfree [Hidden] – 3:50:52
Castform – 1:25:03
Chatot [Hidden] – 4:09:54
Cinccino – 59:37
Clefairy & Clefable – 2:38:17 / Clefairy [Hidden] – 2:47:37
Cobalion – 2:20:58
Combee & Vespiquen – 1:04:37 / Combee [Hustle] – 1:14:20
Corphish & Crawdaunt – 3:56:27
Corsola – 2:30:34 / Corsola [Hidden] 4:09:46
Cottonee & Whimsicott – 46:48
Cresselia – 3:34:47
Crobat – 4:03:50
Crustle – 2:37:16
Cryogonal – 3:46:01
Cubchoo [Normal & Hidden] – 1:51:52
Darumaka – 41:08
Darmanitan [Hidden] – 54:28
Deerling [Normal & Hidden] – 1:19:34
Delibird – 2:31:36
Dewgong – 2:35:40
Dialga [Hidden] – 3:06:35
Ditto – 2:41:19 / Ditto [Hidden] – 2:49:25
Dragonite [Hidden] – 4:09:56
Drilbur – 38:15
Drifloon [Hidden] – 2:57:34
Drifblim – 1:58:56
Druddigon – 3:16:47
Ducklett – 1:16:04
Duosion – 2:03:09
Dunsparce – 21:36 / Dunsparce [Hidden] – 1:18:47
Durant – 3:38:38
Dwebble – 50:57
Eelektrik – 2:36:53
Eevee – 32:32
Elekid – 23:58
Elgyem – 1:55:05
Emolga – 1:00:37
Espeon – 33:04 / Espeon [Hidden] 3:19:58
Exadrill – 2:04:05
Ferrossed – 1:28:41
Flareon – 55:31 / Flareon [Hidden] – 3:19:32
Foongus [Hidden & First Appearance] – 1:13:18
Foongus [Normal & Second Appearance] – 1:19:23
Frillish & Jellicent – 1:41:30
Garbodor – 2:27:27
Garbodor [Hidden] – 2:29:11
Genesect – 4:10:33
Gigalith – 1:46:41
Giratina [Hidden] – 3:11:02
Giritina Origin – 3:31:43
Glaceon – 3:44:54 [There is no Hidden Ability Glaceon bio, it slipped through the cracks]
Gligar & Gliscor – 2:22:53 / Gligar [Hidden] – 2:53:17
Golbat – 1:54:08
Golduck – 2:12:58 / Golduck [Hidden] – 2:53:08
Golurk – 3:16:03
Gothita – 1:01:45
Gothitelle – 2:28:31
Gothorita – 2:02:37
Granbull [Hidden] – 4:06:41
Grimer – 30:25
Growlithe – 27:38
Gurdurr – 1:34:21
Hariyama [Hidden] – 3:51:48
Haxorus – 4:14:39
Heatmor – 3:46:58
Heatran – 4:12:06
Heracross – 1:07:42 / Heracross [Hidden] – 1:15:50
Herdier [Hidden] – 1:44:12
Hippopotas & Hippowdon – 3:22:12
Ho-Oh [Hidden] – 3:12:10
Hoothoot [Hidden] – 3:06:20
Igglybuff [Hidden] – 2:58:12
Jellicent [Hidden] – 2:05:45
Jigglypuff – 4:02:03
Jolteon – 57:34
Jolteon [Hidden] – 3:19:16
Joltik – 1:27:32
Karrablast – 1:20:46
Keldeo – 2:34:33
Kingler [Hidden] – 4:09:23
Klink – 1:30:08
Koffing – 28:12
Krokorok – 1:36:01
Kyurem – 3:32:18 / Black Kyurem – 2:43:52 / White Kyurem – 2:45:44
Landorus – 3:02:47
Lapras – 2:22:00
Latias – 3:58:21
Latios – 3:59:44
Leafeon – 3:49:41 [There is no Hidden Ability Leafeon bio, it slipped through the cracks]
Leavanny [Hidden] – 1:15:12
Lickitung & Lickilicky – 4:04:51
Liepard – 59:55 / Lipard [Hidden] – 1:12:42
Lillipup – 17:22
Litwick – 1:52:59
Lombre [Hidden] – 3:55:57
Lugia [Hidden] – 3:13:58
Lunatone – 2:19:38
Magby – 26:57
Magikarp – 3:33:59
Magnemite – 25:10
Manectric [Hidden] – 3:58:07
Maractus – 50:25
Mareep – 15:48
Marill & Azumarill – 1:23:12
Marill [Hidden] – 1:43:56
Mamoswine [You should just click on Piloswine] – 2:43:46
Mandibuzz [Hidden] – 48:00
Mantyke & Mantine – 2:08:09
Medicham [Hidden] – 3:52:44
Meinfoo – 2:15:45
Meinfoo [Hidden] – 2:34:10
Meinshao – 2:52:57
Meloetta – 3:20:20
Mesprit – 3:23:50
Metang & Metagross – 2:42:40
Metang [Hidden] – 2:48:06
Minccino – 42:51 / Minccino [Hidden] – 1:10:57
Muk – 1:40:12
Muk [Hidden] – 2:28:58
Munna [Hidden & First Appearance] – 2:56:02 / Munna & Musharma [Normal] 4:02:55
Murkrow [Hidden] – 3:51:15
Nidoran Female & Male – 4:06:16
Nosepass – 1:26:15
Nosepass [Hidden] – 1:44:28
Numel & Camerupt – 1:57:03
Oshawott – 4:12
Onix – 34:30
Pachirisu [Hidden] – 3:57:55
Palkia [Hidden] – 3:08:56
Panpour – 1:10:18
Pansage – 1:08:30
Pansear – 1:09:25
Patrat – 5:56
Pawniard – 2:26:22
Pelipper – 2:17:48
Pelipper [Hidden] – 2:33:46
Petilil & Lilligant – 45:33
Pidove – 10:26
Piloswine – 2:39:57
Pinsir – 1:07:04 / Pinsir [Hidden] – 1:15:27
Poliwhirl & Politoed [Hidden] – 3:52:53
Porygon [Hidden] – 3:01:55
Psyduck – 12:49
Pupitar & Tyranitar – 3:36:44
Purrloin – 7:21
(Cont'd in pinned comment)