Marvin was left behind when his humans moved house and was discovered by an apartment manager in the abandoned apartment.  He was fostered by the apartment manager while waiting for a spot to open up at a rescue, and was un-neutered at the time so was of course a very rude houseguest.  Now that Marvin is neutered, he is using the litterbox and slowly becoming a calmer, more polite bun.  He generally accepts petting and is a fast, active little guy!