Jef
| Group(s): | Rebels & Movement |
| Real name: | Kalle Halttunen |
| Nationality: | Finnish |
| Function: | Code & graphics |
| Previously known as: | McD (Rebels) |
Releases in which Jef participated:
| Just add Water (Code) | Rebels | 28.07.1991 |
| Mini BBS Intro (Code & text) | Rebels | 08.1991 |
| Assembly '92 Info Intro (Code & text) | Rebels | 03.1992 |
| Assembly '92 Invitation (Code & graphics) | Complex & Rebels | 03.07.1992 |
| 40k (Party edition) (Code & text) | Rebels | 28.12.1992 |
| Assembly '93 (Code & graphics) | Complex, Accession & Movement | 1993 |
| 40k (Final edition) (Code & text) | Rebels | 01.1993 |
Releases in which Jef is mentioned as a member:
| Assembly '92 Info Intro | Rebels | 03.1992 |