Another quisling, this time of the piscine variety. A fish, encouraging us to eat fish. What's noteworthy - and slightly touching, in a way - is that Dave identifies with his captors more than his own kind. It's not unusual for this manifestation of the Stockholm Syndrome to be found in mascots - Charlie the Tune is perhaps the most notable example. A sure sign of this mental disorder is the adoption of human dress, as seen here. Dave wears a mackintosh and a hat. Fish do not need overcoats. Don't tell Dave that, though - he is a gentle soul.