This story in the series features a secret agent called "Nullnullsix" (i.e. 0-0-6), and he looks remarkably familiar!
Yeah, reading the German version... Our spy got his number because he failed the druid exams six times. The examiners gave him a sympathy pass when he presented himself for the 7th time. LoL.
This is an early A&O comic. The early ones are still the best.