Mo & Krill build guide

Ray "Big Sexy" Chase [FULLY ANNOTATED]

by MounTmikeYVersion 63Updated Oct 3, 2026Guide #691381

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Observed usage

Match statistics · filters applied except game mode

Published guide

As written by the author · latest version · not affected by filters

In-game favourites: 24 (as last synced by the API; not match usage)

Author's notes

This is the best Mo build I have used so far. Beginner friendly with the annotations! Just listen to Ray's sweet, silky voice while you become the bane of enemy team's existence. Enjoy!

Item categories

1Big Sexy Early Game
Author's category · 10 items · L -> R, usually. Make good use of burrow.
1. 1
  Mystic Expansion
  Hit scorns you wouldn't expect to hit.
2. 2
  Mystic Burst
  more damage, and build into Tankbuster later.
3. 3
  Quicksilver Reload
  aka: "QSR." Sell 2nd when slot locked.
4. 4
2Alt gunoptional
Author's category · 1 items
1. 1
  Slowing Bullets
  Was nerfed, I dont usually get anymore.
3Big Sexy Countersoptional
Author's category · 3 items
1. 1
  Slowing Hex
  Use on Apollo, Lash, Infernus, Pocket, Wraith, Mina, Rem, Dynamo, etc.
2. 2
  Suppressor
  Obv use against gun heros. BUT also consider using against heros with an already low fire-rate (Like Abrams, Silver, etc) trust me.
3. 3
  Spirit Sap
  Combine this with Spirit Shredder Bullets if you have a spirit heavy lane partner. Might be Big Sexy.
4Big Sexy Mid Game (CORE)
Author's category · 5 items · L - > R , usually.
1. 1
  Fortitude
  Built from Extra Health
  Must get. Heal in between fights. This is how you sustain and tank every fight.
2. 2
  Healbane
  Mo is one of the best appliers of this in the game. Don't sell unless you're trying to end the game and know what you're doing.
3. 3
  Improved Spirit
  Built from Extra Spirit
5Big Sexy Green Optionsoptional
Author's category · 3 items
1. 1
  Metal Skin
  Great for Silver, Haze, and Venator ults. Consider this over Bullet Res against gun comps.
2. 2
  Dispel Magic
  Great for debuffs Bebop bomb, Infernus burn, etc.
3. 3
  Warp Stone
  Can warp stone in Ult (now) as well as borrow and get up high with it. Also, warp stone from above mid boss onto crystal to parry is BIG SEXY.
6Gun upgrade?optional
Author's category · 3 items
1. 1
  Spirit Rend
  Built from Spirit Shredder
  Might was well, easy to apply as Mo. Sell for a T4 if rich.
2. 2
  Alchemical Fire
  Great alternative gun item. Good if you have a bullet dmg team. Throw before you Ult!
3. 3
  Weighted Shots
  Built from Slowing Bullets
7Big Sexy Late Game
Author's category · 5 items · Buy what you need.
1. 1
  Colossus
  Built from Extra Health
  Get this as soon as you can! It's mainly where your resists come from. This is needed for tanking!
2. 2
  Scourge
  Was nerfed pretty hard, so consider another Big Sexy Late option.
3. 3
  Refresher
  It's Big Sexy to double ult as Mo. Guaranteed kill if it's the same person and your team is there. I get this most games.
8Big Sexy Late Gameoptional
Author's category · 11 items · Buy what you need.
1. 1
  Return Fire
  This item is way better in the late game. Such a BIG SEXY tank item, don't you think? Feel free to get a different defensive or counter item.
2. 2
  Enduring Speed
  Built from Sprint Boots
3. 3
  Majestic Leap
  This patch, you can be a Big Sexy kidnapper.

Categories appear in the author's order. Only the editor's default Early, Mid and Late sections are marked as game stages; the author's own categories keep their names. “Built from” links come from the game's item recipes.

Published ability order

Published ability order: unlocks and upgrades in the author's order, one row per ability in slot order
ScornScorn	Scorn: Ability unlocked, step 1	Scorn: 1 AP upgrade, step 2								Scorn: 2 AP upgrade, step 10				Scorn: 5 AP upgrade, step 14