Although the members of B-Troupe are known to fool around and not take things seriously in the earlier seasons, the troupe begins to drastically change in Season 3. Giselle comments that it is nothing like it once was, back when she belonged to it.
Nonetheless, being demoted from A-Troupe to B-Troupe is deemed as negative, as it means that you haven't improved at all as a dancer, or you have gotten worse. Thalia works with B-Troupe and lets her dancers become guest members. Then Thalia focus on Nationals. In Season 8, Lucy becomes the first Dance Captain of B-Troupe but when Lucy leaves B-Troupe. Elliot becomes Dance Captain.