| 1. Marcel worked as a chef before starting his career as a geriatric nurse. |
| 2. He managed a pub called Schiefels Green. |
| 3. As of 2025, he had 6,255 followers on Instagram. |
| 4. He stays in shape by regularly going to the gym. |
| 5. He participated in Big Brother seasons 8 and 9, finishing as the runner-up each time. |
| 6. In 2025, he also participated in Big Brother season 15, securing another runner-up position. |
| 7. He drinks alcohol on occasion. |
| 8. As of 2025, he had 9,252 followers on Instagram. |
| 9. He participated in Big Brother seasons 8 (2008) and 9 (2009), finishing as the runner-up each time. |
| 10. In 2025, he participated in Big Brother season 15, winning the season. |
| 11. He maintains his fitness by working out at the gym.[1] |
| 12. He participated in Big Brother Germany season 8 (2008) for 176 days and season 9 (2009) for 169 days, both on RTL II, finishing as runner-up each time.[1][2] |
| 13. Big Brother Germany season 15 (2025) aired on Sat.1, Joyn, and sixx.[1] |
| 14. In 2025, he participated in Big Brother Germany season 15, which aired on Sat.1, Joyn, and sixx, winning the season. |