Imprisoning Gumball and TobiasEdit
After Gumball, Darwin, Penny and Stacy eavesdropped on Mayor Vanderwick's conversation, they were imprisoned. Gumball and Tobias was not able to get out, and are still imprisoned by Vanderwick.
It seems that Mayor Vanderwick, like Principal Brown and Miss Simian, dislikes Gumball, but is not really concerned about him.
As shown in The End of Elmore Part 3, it is hinted Mayor Vanderwick and Tobias have confronted each other before - and that Mayor Vanderwick is ready for revenge.
Mayor Vanderwick also has a strong disliking for Darwin and isn't concerned about him.
The two seems to be partners as shown in the last part of The End of Elmore saga. They both work for an unseen "boss".