Skull Champion

Walther's Notes - Restored
This note was found sliced to bits with what appears to be axe markings. It has since been partially rewritten through conjecture.

''The "Skull Champion". Paranormal entity from what the team have called the 'Underworld'. Colossal in size with the rage and undying vigour to match its lethal strength, striking fatal blows in single, effortless hits.''

''They're drawn to high concentrations of death occurrences, conflicts between survivors and the infected hordes being the best source. Potentially the correlation between the high number of deaths and their spawning is how they arrive to this world, they are not naturally formed and no signs of the virus are present on what remains we've seen.''

''Wields an axe and flail attached to a metal chain of an unknown metallic design, weapons quickly fade to ash when (Note: if) the skull champion is taken down. I believe their materials are linked to this Underworld in that regard.''

Summary
The Skull Champion is a playable mini boss that is spawned after 300 zombies are killed. The Skull Champion is also a champion variation of the halloween mob Skullguard.

Background Story
Clearly, the Skullguards were having a rough time. Year after year, they attempt to thwart the progress of the survivors by luring them to the ends of their elaborate obstacle courses, and year after year their plans fail. First it was protecting mansions, and then they were relegated to nothing more than two graveyards. After three years, they decided that enough was enough. But one of them decided against it.

Its festered rage finally erupted after so long, and so it decided to stop waiting for the survivors to come to them... and instead go to the survivors. And it has now garnered a reputation as a monster. Very few have seen this beast and lived to tell the tale. Those lucky few who defeated it are in for a welcome treat when they decide to go on a zombie-killing rampage again, because... Let me tell you.

Skeletons... they're already dead.

Survivors

 * Stay away from the Skull Champion since his attack range isn't too far.
 * Get into some indoor places, Skull Champion may not fit through.
 * Although be careful of the Smash attack as it has a extremely large blast radius.
 * To prevent this from spawning, try to avoid killing zombies that don't need to be killed immediately.
 * Skull Champion is immune to weapons that trip, such as Boo Buster (it will not lock onto it), Melees and Fire Extinguisher.
 * However, the knockback is still applied, use Fire Extinguisher to push away Skull Champion into environmental hazards.
 * A better alternative is to use Splashy Washy, due to its long range and knockback.
 * Don't stay extremely close to spawns to spawn camp. A Skull Champion may surprise you.
 * Be careful in Arena, as you must kill zombies to move onto the next wave, this may lead for a Skull Champion to be summoned.
 * In Rescue, Skull Champion may camp by the Helicopter to prevent players from entering.
 * Make up a plan to lure it away.
 * Using the RPG, you'll need to fire 20 direct hits to kill a Skull Champion.
 * This amounts to 5 total Ammo Stations, or 10 Extra Ammo boxes, if you attempt to take this down solo.
 * Using the M2 Tripod on the Skull Champion, will do 22,000 damage. However, this is not recommended as you are immobile.

Zombies

 * Try to rush on survivors to get his attention.
 * Try to not get stuck.
 * If it happen you can try to use Relocate.
 * Use your Smash attack if the Survivors try to get indoors.
 * The axe will kill survivors on contact. Use this to your advantage by making people touch the axe with Stalker.
 * Swinging your "Cube" will not drain your stamina.
 * Have it ready at all times just in case a player is running by you.
 * You can only jump twice before running out of stamina, use it wisely.
 * Lethal and deep pools of water are your enemy, as you can sink or be instantly killed.
 * Be careful with people who have a Splashy Washy equipped.

Trivia

 * This is the first playable Mini-boss.
 * This has the most health of all of the zombies.
 * It resembles a Skullguard.
 * The tallest zombie in the game.
 * Second is Stalker.
 * First zombie in R2DA that plays music when spawned.
 * The Tank in R2D would also play music when it spawned.
 * As of 1.4.2 resetting as a Skull Champion has a chance of crashing Roblox