Even though he hasn't been in the band for a long time, everybody still remembers the ex-singer Udo.
In Udo's absence, Wolf has more or less become this.
Fanon Discontinuity: The band decided to adopt a more mainstream approach in the late 80's, and the result was the Glam Metal-leaning Eat the Heat, which wasn't taken well by fans, and is nowadays rarely referenced.
Growing the Beard: After two uneven albums (which were even called Scorpions ripoffs), Breaker solified the band's heavy metal sound.
"Wrong Is Right" from Metal Heart is an anti-commercialization song. Then, in the late 80's, the band released the blatantly commercial Eat the Heat.
In the music video for "Balls to the Wall", the video ends with Udo riding a wrecking ball that crashes into a building. Thirty years later, another musician became famous for riding a wrecking ball in one of her music videos.
The cover of Balls to the Wall, which is focused on some half-dressed guy's nether regions.
Some of the lyrics were accused of having these themes, due to them being written by a female (Gaby "Deaffy" Hauke, now wife of the guitarist Wolf Hoffman).
Music to Invade Poland To: The band got into a bit of trouble with this trope because of "Fast as a Shark". As an inside joke, they decided to use an old recording of their producer Dieter Dierks singing a traditional German song named "Ein Heller und ein Batzen" ("A Farthing and a Penny") as the introduction (quoted in the main page under Careful with That Axe), to contrast with their heavy sound. However, they were not aware that it was a popular marching song in Nazi Germany, causing some controversy when the album came out.
The band sometimes had problems with English pronunciation and English idioms. Some examples:
"He was a leader, malicious and wiolent" ("The King") "I know you would like some light, but sorry, here is no lamp" ("Turn Me On") "The force is too strong, it's breaching the chains" ("The Beast Inside")
Then, there are some of their lyrics that are just strange:
"Icicle brains, bicycle chains" ("Breaker") "Write a letter, what's the matter? You'll feel better, write a letter." ("Losers and Winners")
David Reece, who sang in the Glam-oriented Eat the Heat, as he sounded nothing like Udo Dirkschneider.
Strongly averted with Mark Tornillo; some fans were initially skeptical, but after his performance on Blood of the Nations, they were all won over. You have to try very, very hard to find someone who takes issue with him nowadays.
Signature Song: "Balls to the Wall" for Dirkschneider's era, "Teutonic Terror" for Tornillo's.
Some Anvils Need to Be Dropped: "Losing More Than You've Ever Had" is one of these to breakup songs from the male perspective where the boyfriend was clearly at fault but won't take responsibility for their actions, with the message being "shut the fuck up about losing your girlfriend, it's been ages since she left you, you're not getting her back, and she left you for good reason".
Win Back the Crowd: After having been in several years of hiatus, Blood of the Nations proved that the band still got it what it takes.