The team has five members, but every member has smart moments, and strong moments, and maybe even useless moments.
Justified: Evulz teamed up with the other four because he knows his political ambitions have next to no chance of succeeding with his influence alone, and he knows that a Ragtag Bunch of Misfits can cause serious problems if left unchecked.
Double Subverted: It was just a ploy to get the heroes guards' down.
Parodied: The team is comprised of stereotypical villains that are hilariously incompetent. They will either scarcely accomplish any evil or betray each other in every stereotypical way they can think of, making the group bring itself down from the inside.
Zig Zagged: Emperor Evulz assembles Bob's enemies, and their individual loyalties are constantly shifting between themselves and Evulz, leading them to plot and counterplot against each other.
Alternatively, the team of 5 villains all have the same personality and are interchangeable.
Enforced: The comic that Bob and Emperor Evulz are in needs a new and more dangerous threat each month, so the author decides to have the villains team up.
Lampshaded: Bob: "Why do my problems always come in fives?"
Invoked: Evulz gets defeated by Bob's team for the first couple of times, then gives a few calls to Bob's other enemies, knowing that there is strength in numbers.
Defied: Bob defeats Evulz for the first few times and realizes that he's getting more desperate. He then takes steps to sabotage any negotiations that Evulz will have with the rest of the villains.
Discussed: Bob is talking to Alice about their team-up to remove a bomb from a government building and says, "I'm glad we're the good guys. Emperor Evulz would be doing the opposite of this if he teamed up with the other villains."
Conversed: Alice is watching "Bob vs Emperor Evulz On Ice," and mentions to her boyfriend Charlie that towards the middle of the show, Evulz will probably call in General Drake, Dr. Crazystein, Jason Bloodspiller and Violet Darkheart for backup.