| 2024-03-29 14:10:19 | menace | Deleted Speed-Head's credit on Sunisinus |
| 2024-03-29 13:29:28 | menace | Deleted Speed-Head's credit on Demomuz |
| 2024-03-29 12:58:32 | menace | Deleted Speed-Head's credit on New |
| 2024-03-29 12:16:05 | menace | Deleted Speed-Head's credit on Iruiru |
| 2024-03-29 08:53:55 | menace | Deleted Speed-Head's credit on Worry |
| 2024-03-29 08:29:26 | menace | Deleted Speed-Head's credit on Cat |
| 2024-03-29 08:24:07 | menace | Set location to Spånga, Stockholms Kommun, Stockholm, Sweden |
| 2024-02-24 14:05:05 | psenough | Added credit for Speed-Head on Ultimate Creation: Text |
| 2024-02-24 12:12:13 | psenough | Added credit for Speed-Head on Mega-Mix: Graphics |
| 2024-02-23 04:40:39 | psenough | Added credit for Speed-Head on Grappo: Code, Text |
| 2024-02-23 04:05:24 | psenough | Added credit for Speed-Head on Cool Demo: Code |
| 2023-01-29 19:57:52 | menace | Deleted Speed-Head's credit on Arcanoidia |
| 2023-01-05 00:08:32 | 100bit | Updated Speed-Head's credit on Muzzax IV: Music, Text |
| 2023-01-05 00:07:38 | 100bit | Added credit for Speedhead on Muzzax V: Graphics, Music, Text |
| 2023-01-05 00:02:45 | 100bit | Added credit for Speedhead on Muzzax VI: Graphics, Music |
| 2022-08-10 08:43:52 | Brittle | Added nick 'Juhax' |
| 2022-08-10 08:40:58 | Brittle | Added nick 'JMS' |
| 2022-08-07 16:36:32 | Brittle | Added Speedhead as a member of Mjau |
| 2022-08-07 16:36:25 | Brittle | Added link https://csdb.dk/scener/?id=957 |
| 2022-08-05 15:05:03 | Brittle | Added link https://juhaxgames.com/ |
| 2022-08-05 15:04:50 | Brittle | Set location to Stockholm County, Stockholm, Sweden |
| 2022-08-05 15:03:43 | Brittle | Edited nick 'Speedhead': set as primary nick |
| 2022-08-05 15:03:35 | Brittle | Added nick 'Speedhead' |
| 2022-05-17 04:46:54 | menace | Added credit for Speed-Head on Rape Collection 1: Music |
| 2022-05-07 19:50:16 | menace | Updated Speed-Head's credit on Muzzax III: Music, Text |
| 2022-05-07 19:48:56 | menace | Added credit for Speed-Head on Muzzax III: Music |
| 2022-05-07 19:39:51 | menace | Added credit for Speed-Head on A New Star Is Born: Music |
| 2022-05-07 19:39:27 | menace | Updated Speed-Head's credit on Credits: Music (uncredited) |
| 2022-02-08 19:37:00 | menace | Updated Speed-Head's credit on Muzzax I: Music, Text |
| 2022-02-08 19:35:48 | menace | Added credit for Speed-Head on Muzzax I: Music |
| 2018-11-17 15:00:23 | 100bit | Added credit for Speed-Head on New Stuff: Music |
| 2018-08-14 19:12:26 | Brittle | Added links: http://amp.dascene.net/detail.php?view=6931, https://soundcloud.com/juhasoderqvist/ |
| 2017-11-13 21:20:02 | menace | Set real name |
| 2017-11-13 21:16:47 | menace | Updated Speed-Head's credit on Muzzax II: Text, Music |
| 2014-08-20 19:00:24 | ltk_tscc | Updated Speed-Head's credit on POV 136: Music |
| 2012-08-26 10:31:00 | menace | Added credit for Speed-Head on Muzzax IV: Music |
| 2012-08-26 10:28:46 | menace | Set location to Sweden |
| 2012-08-26 10:27:18 | menace | Added Speed-Head as a member of Byterapers |
| 2012-08-26 10:27:14 | menace | Added credit for Speed-Head on Muzzax II: Music |