Yamcha is one of the worst fighters in the Z-Fighters in Dragon Ball Z and Dragon Ball Super. As a result, he is regarded as weak because he frequently loses to the majority of the enemies.
In addition, during his time as a fighter, Yamcha never had any real friends or allies which makes him even weaker. Also, it is revealed that Yamcha is only human which makes him even weaker. Humans are much more vulnerable to attacks than dragons so defeating a dragon proves that you are indeed a powerful fighter.
Finally, Yamcha has no respect for life which means that anyone who fights against him will most likely die. This makes him even weaker since there's no chance of survival when fighting against him.
Dragon Ball creator Akira Toriyama says that he created Yamcha as a challenge since he believes that nobody else would have dared to create such a weak character. Thus, he created someone who everyone knows will lose so that people can laugh at him when he gets beat up by other characters.
Yamcha first appeared in the manga chapter "The Return of Cooler" from volume 14 of Dragon Ball. To date, this is the last appearance of Yamcha in either the original manga or the anime.
Yamcha may not be the most strong character in the Dragon Ball franchise, but his role as the underdog attracts followers. Yamcha may have defeated Eren Yeager and Goku in a one-on-one combat when they were initially presented to fans. "Distinct antidepressants target different neurotransmitters in the brain and neurological system," explains Justin Hall, MD, of Spectrum Behavioral Health in Annapolis, Maryland. "Serotonin is the most widely targeted neurotransmitter linked to anxiety and depression." Zoloft works by blocking serotonin receptors inside neurons. Cipralex also blocks serotonin receptors but it does so more specifically--in addition to those for other hormones such as adrenaline and dopamine--which may help explain why it has fewer side effects than Zoloft.
Yamcha is known for being the first character to defeat both Eren and Goku. In fact, he defeats Eren even after learning that Goku is dead. This proves that even though Eren is a giant warrior at only 15 years old, he can be beaten by someone who is not necessarily stronger but rather better trained. And since Goku was gone, Yamcha assumed he had been killed too.
However, what makes this story interesting is that later on in the series it is revealed that Goku actually survived his fight with Eren but he was severely injured. Since Yamcha defeated both Eren and Goku, this means that he must have been training specifically for this moment. This shows that despite his small size, Yamcha is not afraid to fight against big opponents as long as they are not active robots created by Kaioh.
Yamcha has become stronger and has been training, as revealed in Dragon Ball Super. However, he is currently using his strength for baseball rather than fighting. He also seems to have an interest in the female Saiyan race, which could explain his increased strength.
Yamcha first appears in the episode "Hercule becomes strong". He is seen playing baseball with his friends in the forest when they are attacked by Capsule Monsters. It turns out that it was all a set-up by Raditz who wanted to fight Hercules. When the monsters attack again, this time without Raditz's help, Yamcha fights them off until Goku arrives on the scene. After seeing how strong Yamcha has become, Goku decides to train him so that he can face Majin Buu later on.
In the Dragon Ball Z anime series, it is revealed that Yamcha eats boar meat to increase his strength. This would also make sense with what happened in the Dragon Ball Super episode "A New Challenger Appears", where we saw that Piggy's meat caused Broly to grow stronger.
Yamcha handled everything calmly, slipping home and proved himself to be the best Z fighter, even stronger than Goku. Also, it should be noted that while Goku is strong, he does rely on his strength to win fights. Yamcha has other skills which makes him a tough opponent to beat.
Goku may be a lot of things but he's not strong. Even when you increase his power to maximum levels using the Dragon Balls, he can still only lift about two tons (or 2,000 pounds). That's less than half of Yamcha who can lift about five tons (5,000 pounds). Even when Goku joins forces with Vegeta, the strongest prince in the world who can lift almost 50 times his weight, they are still no match for Yamcha who can lift almost 100 times his own weight.
Gohan too was born completely normal but with the help of Kakarot, his father's spirit which has been trapped inside of him, he became strong enough to fight crime as a superhero named "Gohan". However, even he could never match up to Yamcha who has been fighting criminals for years now.
Even though Yamcha is meant to be weak in Dragon Ball Z, he is far more powerful than Street Fighter characters. He'd beat up Ryu and knock him around, and he'd tank a Hadouken to the face with ease. Also, his size makes him a threat even against the smaller fighters like Ken or Charlie.
During his first appearance in the series, Yamcha is beaten by Goku after a short fight. However, since then, he has become stronger and now has been shown fighting seriously injured people in order to win money. It should be noted that before these events took place, Dragon Ball had not yet started production, so this part of Yamcha's story does not exist in the original manga or anime.
Also, during one of his matches, it is revealed that Yamcha is being controlled by Buu, who is trying to stop Goku from reaching the Spirit Bomb. Once defeated, Buu leaves his body, which allows Yamcha to go on to win his match.
Finally, despite not appearing in any official capacity, it is possible to defeat Yamcha if you use character cards from other games in Super Smash Bros.. Specifically, if you use Yamcha's Dragon Rage card, he will deal massive damage to your opponent. This card can only be obtained by downloading it from the Internet, so it isn't available in any physical form.
Almost every battle Yamcha takes part in is highly orchestrated and full of emotion, owing to the fact that he always loses. Yamcha is a character that, most of the time, sees a loss as a chance to progress. While his Dragon Ball adventure comes to a disappointing conclusion, Yamcha participates in some of the franchise's biggest bouts.
Yamcha is one of the first characters introduced to the audience. He has been through a lot already, including losing his eye during one of Goku's training sessions. Despite this serious injury, which would probably be fatal for another person, Yamcha keeps fighting. This shows that he has a strong spirit within him and it seems like he will not give up even when facing defeat.
Also worth mentioning is the fact that Yamcha enjoys fighting for its own sake. It is shown through his conversations with Trunks after their battles, where he expresses his desire to fight again. This indicates that despite being a weak Saiyan, he can still keep himself motivated enough to want to fight more.
Finally, it should be noted that Yamcha gains experience by winning and losing. This makes him one of the most developed characters in the series who actually grows over time.
In conclusion, Yamcha is a strong fighter who sees loss as an opportunity to grow. He is a character that stays motivated even after suffering major injuries, and this makes him one of the most interesting fighters in the Dragon Ball universe.