Lunch - Goku and Krillin need to find a hot girl so Master Roshi can train them and they find Lunch. They bring back Lunch, and then the gag is revealed that she changes form when she sneezes. Then what? She does do a few useful thing like help Master Roshi fight Red Ribbon Soldiers, but she doesn't really develop like Yamcha and Tenshinhan did in their debut arcs. We do see get her crush with Tenshinhan, but that is never developed. After the 23rd Budokai, Toriyama seems to have put her on a bus and gotten rid of her. The only times I recall seeing her was that Toriyama-inspired filler in the Saiyan Arc and Christmas Namek Arc Special Panel.
Yajirobe - In his debut he is shown to be even strong enough to match Goku and somewhat of a rival to him. Then what? In his debut arc, he doesn't really develop and instead falls into obscurity right away! Instead the Daimao arc shifts Tenshinhan back into the role of Goku's rival/measure stick comparison. Not to mention he debuts at a time two other characters, Tenshinhan and Chaozu, were added so it feels overcroweded. I've heard allegations he was added because Kuririn was killed off, so the voice actress lost her job. I thought they could have just given her voice to Piano, since he doesn't do much but talk anyway. He does a few useful things, but I felt like they could have gone to other characters. Why not Oolong? Since Yajirobe's personality is just a retread of his.
Thoughts?
EDIT - Just to make something clear. I don't dislike either character and I'm not trying to insult them or their fans, but rather felt like their presence in the story was lacking.









