Developer

The Developer is a mysterious, unconfirmed tank in Diep.io. Some people say it's a joke, some say it's the actual developer trolling people. Others make conspiracies about it.

First Report(s) - August 28th
The first reports of this tank were in August 28th, when it misteriously appeared in a server with few people. They said he was a huge tank with a yellow name "Developer" above it. They said it was a Machine Gun, then became a Sprayer, then a Stalker, and eventually left.

Second Report - August 29th
This day, the developer of Diep.io says that he accidentally left some developer cheats without a password. It is still unknown if this has been patched or not.

Third Report(s) - September 4th
Right when Sandbox mode launched, people said to be finding unknown invisible entities with apparently infinite health, and when they ram into it, they get killed and the object is still invisible. The death screen said "You were killed by Developer". Apparently by cheating, as when there are more than 2 people in a sandbox server, God Mode is disabled. When they checked back 5 minutes later, it was very laggy and the game froze.

This sighting may be edited, as the player in it managed to toggle God Mode when multiple players were in the server.

Fourth Report - September 11th
He was testing if it was possible to kill the tanks. Nothing else.

Trivia

 * These Developer Cheats are the Sandbox cheats.
 * The Developer was probably testing them, in purpose to make and release the future game mode.