When it comes to serious, the action was great and the power was so wonderful than you ever expected in a comedy anime.
Gintama is probably my favorite anime ever. It contains almost all kinds of tags (well, maybe not all but it's a lot). One of the best comedies ever. The firstly episodes, the anime was somewhat boring but if you keep patient and continue to watch, it will eventually become much better. The jokes are super hilarious and could makes you have a stomachache from laughing too much. Though the jokes are somehow ... dirty (some of it talk about balls, penis, etc. but still awesome jokes). The anime was also unique and famous for the ability to 'break the fourth wall' - in some episodes, even the characters just sitting there and complaining about the staff was too lazy, or the anime was too boring. The anime is just too funny and too good for entertaining. But that's not all. Gintama is the kind of anime could brought you all kinds of emotions: Happy, sad, angry, ... This anime is funny but it do have serious and tearjerker scenes (this happened surprisingly often in a comedy anime). When it comes to serious, the action was great and the power was so wonderful than you ever expected in a comedy anime. And especially Gintama have lots of tearjerker moments and sad pasts. Gintoki, the main character is a 'lazy poop samurai' - everyone think like that. Nobody knows that he has a sad past (he has no family, his teacher dead because of him, became homeless, ...) So as Kagura, the main female character - her mom dead, her dad always go away without looked after her, her brother joined Harusame, her whole family was corrupted...). The lately arcs in the anime (and chapters in manga) show that the anime is not always funny as everyone thinking. Highly recommended. It surely suitable for comedy - fans and sometimes tragedy - fans too.