
Call of Duty: Black Ops 4 is a first-person shooter video game developed by Treyarch and published by Activision. The game features a battle royale game mode called Blackout, where players can play as characters from across the Black Ops series. To unlock these characters, players must complete specific challenges. One of the most challenging characters to unlock is Mason, the protagonist of the original Black Ops game. To unlock Mason, players must complete the Wake the Sleeper Agent challenge. This challenge involves finding a stained white t-shirt, travelling to the Array location, and activating a terminal button. Players must then stay alive and place within the top 15 in Solos, top 8 in Duos, or top 4 in Quads. Completing the Wake the Sleeper Agent challenge allows players to unlock and play as Mason in the Blackout game mode of Call of Duty: Black Ops 4.
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What You'll Learn
- The challenge is to unlock Mason, a central character in the Treyarch series
- Players must obtain Mason's stained white t-shirt from crates around the map
- The player must then travel to the Array area and find the Sleeper Agent
- The Sleeper Agent is a glowing green console in the main building at Array
- Once the player has activated the console, they must stay alive to complete the challenge

The challenge is to unlock Mason, a central character in the Treyarch series
The challenge to unlock Mason, a central character in the Treyarch series, in Call of Duty: Black Ops 4 (BO4) Blackout is one of the game's highlights. Players can play as characters spanning every single entry in the popular Black Ops series. However, unlocking Mason is not a simple task and is considered one of the hardest characters to unlock in the entire game due to his hefty objectives and unique requirements.
To unlock Mason, players must first complete the Wake the Sleeper Agent challenge. This challenge is quite vague and unexplained, causing confusion among players. To wake the Sleeper Agent, players must obtain Mason's stained white t-shirt, which can be found in random supply crates around the map. Once the t-shirt is collected, players must travel to the Array area on the map and enter the main building in the center. Inside, they will find a console with a blinking green light, which they can interact with by holding the designated button.
After activating the console, players must stay alive with the stained white t-shirt in their inventory. The specific requirements depend on the game mode: players in Solos need to make it to the top 15, those in Duos must secure a top eight placement, and a top four placement is required for Quads. Completing the Wake the Sleeper Agent challenge in this manner will unlock Mason as a playable character in Blackout for Black Ops 4.
It is worth noting that to unlock Mason, players must have already unlocked the character Reznov and played a match with him. While playing as Reznov, they will need to search for the stained white t-shirt in various supply drops. This prerequisite adds an extra layer of challenge to unlocking Mason.
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Players must obtain Mason's stained white t-shirt from crates around the map
To unlock Mason in Black Ops 4, players must complete the Wake the Sleeper Agent challenge. This challenge requires players to obtain Mason's stained white t-shirt, which can be found in random supply crates scattered across the map. The t-shirt is a crucial item needed to unlock Mason as a playable character in the Blackout battle royale game mode of Call of Duty: Black Ops 4.
The process of obtaining the stained white t-shirt adds an intriguing layer to the challenge of unlocking Mason. Players must search through supply crates, also known as supply stashes, located throughout the map. These crates are typically large containers that hold valuable weapons and equipment, and on lucky occasions, they may yield the coveted stained white t-shirt.
The stained white t-shirt is not just a cosmetic item but a symbolic and functional part of the challenge. Once players have their hands on the t-shirt, they must continue their journey to the Array location on the Blackout map. This location serves as a pivotal point in the challenge, as it houses the mechanism needed to activate the Sleeper Agent.
The Array area is where players will find the main building, which holds the secrets to waking the Sleeper Agent. Inside this building, players will encounter a console with a blinking or glowing green light. Interacting with this console by holding the designated button (X/Square or F, depending on the platform) activates the Sleeper Agent, bringing players one step closer to unlocking Mason.
It is important to note that obtaining the stained white t-shirt is just one part of the Wake the Sleeper Agent challenge. Players must also ensure they meet certain placement requirements by the end of the match. For Solo players, reaching the top 15 is necessary, while Duo players must secure a top eight placement, and for those in Quads, a top four placement is required.
Completing the Wake the Sleeper Agent challenge not only allows players to unlock Mason but also adds depth to their gameplay experience. It encourages exploration, strategic thinking, and a thorough understanding of the Blackout map.
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The player must then travel to the Array area and find the Sleeper Agent
To find the Sleeper Agent in Call of Duty: Black Ops 4, players must first obtain the stained white T-shirt, which can be found in crates around the map. Once you have the T-shirt, you must make your way to the Array area.
The Array area is located in the Blackout BO4 map. Once you arrive at the Array, you need to enter the main building in the middle of the area. Inside, you will find the Sleeper Agent, which takes the form of a glowing green console.
To complete the challenge, players must then activate the button on the terminal in the radio tower at the center of the Array. It is important to note that, to unlock the character Mason, players must also stay alive with the stained white T-shirt in their inventory. The placement required to complete the challenge varies depending on the player mode, with players in solos needing to make it to the top 15, duos requiring a top eight placement, and quads needing a top four placement.
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The Sleeper Agent is a glowing green console in the main building at Array
The Sleeper Agent is a challenge in the Call of Duty: Black Ops 4 (BO4) Blackout game mode. It is one of the challenges that players must complete to unlock characters to play as. The Sleeper Agent challenge allows players to unlock Mason, a central character in the Treyarch series.
To complete the challenge, players must first obtain Mason's stained white t-shirt, which can be found in random supply crates around the map. Once the player has the t-shirt, they must make their way to the Array location on the map. In the main building at Array, players will find the Sleeper Agent: a glowing green console. Players can interact with the console by holding in the X/Square button, depending on their platform of choice.
After activating the Sleeper Agent console, players must stay alive with the stained white t-shirt in their inventory. The final part of the challenge varies depending on the player mode. Players in solos need to make it to the top 15, while those in duos must secure a top eight placement. For those playing quads, a top four placement is required to complete the challenge.
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Once the player has activated the console, they must stay alive to complete the challenge
The challenge is part of the Wake the Sleeper Agent quest in Black Ops 4, which players must complete to unlock Mason, a central character in the Treyarch series. The challenge involves several steps, including obtaining the stained white t-shirt, travelling to the Array location, and activating the console in the central building. The console is identified by a blinking green light, and players can interact with it by holding the designated button.
The Wake the Sleeper Agent challenge is one of the highlights of the Blackout game mode for Black Ops 4, as it allows players to unlock and play as characters from across the Black Ops series. However, the challenge to unlock Mason is considered one of the most difficult in the game due to its vague and challenging objectives, which must all be completed in a single match.
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Frequently asked questions
"Wake the Sleeper Agent" is a challenge in the Blackout battle royale game mode for Call of Duty: Black Ops 4. Players must complete this challenge to unlock Mason, a central character in the Treyarch series, in Blackout for Black Ops 4.
To complete the challenge, players must first obtain Mason's stained white t-shirt, which can be found in random supply crates around the map. After obtaining the t-shirt, players must travel to the Array area on the map and locate the main building in the centre. Inside this building is a console with a blinking green light, which players can interact with by holding the X/Square button.
After activating the console, players must stay alive with the stained white t-shirt in their inventory. Solo players need to make it to the top 15, duo players must secure a top eight placement, and quad players need to place in the top four.
Unlocking Mason in Blackout is considered one of the most challenging tasks in the game due to his hefty objectives. The "Wake the Sleeper Agent" challenge adds to the difficulty of unlocking this popular character.
A Sleeper Agent is a Field Upgrade featured in Call of Duty: Black Ops. When activated, it disguises the player as an operator from the opposing faction for a limited time. Sleeper Agents have three states: Hidden, Tracked, and Revealed, which determine how they appear to enemy players.









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