i absolutely love the character designs! these guys look super cool, and this animation alone has me curious about who they are, what their dynamic is like. and if i may i talk about their walks real quick, i adore them; yellow's happy little walk, purple's slower, more controlled gait, blue's swagger... this is genuinely really beautiful! amazing job!
Don't undersell yourself, it is good! Your colours and characters are so cool. I love the expressions on their face, and the yellow coloured one specifically, I love the bob in their step!