For the rest of the article, we will refer to Crew in a Crew Collection as Crew^. Along with this, we will refer to Crew in the same Crew Collection as Crew*.
Summary
Crew^ essentially have an inactive buff that can be activated once a certain criterion is met. To activate a Crew Collection buff, a certain threshold of Crew* have to be present onboard the player's ship. The buffs from these collections grow in effectiveness with the amount of Crew* onboard. Along with this, Crew^ have to be unique to add to the collection. Thus, if you have two of the same Crew* onboard your ship, only one of the Crew* will add to their Crew Collection. Once the collection buff is active, Crew* will glow in a specific color. Note, if a Crew* member dies in combat, they still contribute to the collection buff.
Picture Summary
1. The SavySoda Collection requires 3 Crew* onboard your ship, but only 2 Crew* are currently onboard.
2. Now that Thomas (a crew member belonging to the SavySoda Collection) is onboard, the Collection is active and the Crew* glow.
3. Crew that aren't part of a Collection do not show anything in the circled region.
4. Crew that are part of a Collection show their collection in the circled region.
5. Once the Crew's* Collection buff is active, a perks section will show on the Crew* member's profile.
Now let's explain the chart, starting with the first 3 columns. Collection Name is self-explanatory. Enhancement Icon and Name is the buff the Crew Collection contains.
Next up, Minimum Crew shows the minimum amount of Crew* needed to activate the collection Buff. Maximum Crew shows the amount of Crew* needed to reach the collection's maximum effectiveness.
Base Buff shows the collection's effectiveness when activated with the minimum required Crew*. Step Buff shows how much each additional Crew* improves the collection's effectiveness. Step Buff does not include the Crew needed to activate the collection.
For example, let's say we have 7 total Critters Crew*; 2 in the ship's inventory and 5 onboard the ship. The 2 Crew* in the inventory aren't counted toward the enhancement. Of the 5 on the ship, 3 Crew* are needed to reach the Minimum Crew requirement to activate the Base Buff, and the 2 remaining Crew* help improve the collection by the Step Buff amount. The Base Buff for Critters is 1%, and the Step Buff is 1%. Thus, the collection buff would be 3% (1% (Base Buff, 3 Crew) + 1% (Step Buff, 1 Crew) + 1% (Step Buff, 1 Crew).
Vampirism allows Crew* to steal HP when attacking enemy Crew. The amount of HP stolen is based off the collection buff and how much damage the Crew* deals to the enemy Crew. For example, a Crew* with an attack stat of 4 and a collection buff of 5% gains 0.2 HP (4 x 0.05) per attack on a 5 HP enemy Crew. This HP gain will not go past the Crew's* maximum HP.
Crew In Critters Collection (In Order By Picture): Doge, Roach, Easter Bunny, Squid, Wolfy, Giant Chicken, Phoenix, King Dong, Froggy, Alpaco, Angry Squid, Mr Horse, Whaler, P.A.N.D.A, King Ellie, Polar Bear, Chihuahua, and Buns
Vampirism allows Crew* to steal HP when attacking enemy Crew. The amount of HP stolen is based off the collection buff and how much damage the Crew* deals to the enemy Crew. For example, a Crew* with an attack stat of 4 and a collection buff of 5% gains 0.2 HP (4 x 0.05) per attack on a 5 HP enemy Crew. This HP gain will not go past the Crew's* maximum HP.
Crew In Office Worker Collection (In Order By Picture): Salon Customer, Kingpin, Office Exec, David, Paul, Omar, Jesus, and Helen
EMP Discharge allows Crew* to EMP enemy Rooms when boarding their ship. Once Crew* have boarded the enemy ship, they will discharge an EMP every second. The Crew* member doesn't need to be attacking the Room to EMP it, they just have to be inside it. How long the enemy Room is EMP'd is based on the collection buff. For example, a Crew* member has a collection buff of 0.2, and the Crew* member takes 4s to walk through an enemy room. Every second, the buffed Crew member will EMP that room for 0.2 seconds, for a combined total of 0.8 seconds.
Crew In SavySoda Collection (In Order By Picture): Mr Coconut, Menga Linuxer, Yusi, Xin, Rob, Thomas, Eric, Vivien, Cara, Emily, Soda Delivery Guy, Geeky Vincent, Le Vincent, Tiffany, Aaron, Mousey, Christian, Abbie, TJ, and Ennui
EMP Discharge allows Crew* to EMP enemy Rooms when boarding their ship. Once Crew* have boarded the enemy ship, they will discharge an EMP every second. The Crew* member doesn't need to be attacking the Room to EMP it, they just have to be inside it. How long the enemy Room is EMP'd is based on the collection buff. For example, a Crew* member has a collection buff of 0.2, and the Crew* member takes 4s to walk through an enemy room. Every second, the buffed Crew member will EMP that room for 0.2 seconds, for a combined total of 0.8 seconds.
Combat Medic allows Crew* to heal friendly Crew members in the same room the Crew* member is in. Crew* must be idle/attacking/repairing a room to begin healing. Crew* cannot heal themselves, and they cannot heal more than one Crew member at the same time. Crew with the lowest HP will be healed first, and the Crew* member will stop healing once everyone is at full HP. The amount of HP healed is based on the collection buff, and the buff will activate every second. For example, with a collection buff of 0.3, the Crew* member will heal 0.3 HP per second to the lowest HP friendly Crew member in the same room.
Crew In Constellation Collection (In Order By Picture): Taura, Sagita, Cancer, Gemini, Libra, Leo, Virgo, Ophiuchus, and Scorpio
Combat Medic allows Crew* to heal friendly Crew members in the same room the Crew* member is in. Crew* must be idle/attacking/repairing a room to begin healing. Crew* cannot heal themselves, and they cannot heal more than one Crew member at the same time. Crew with the lowest HP will be healed first, and the Crew* member will stop healing once everyone is at full HP. The amount of HP healed is based on the collection buff, and the buff will activate every second. For example, with a collection buff of 0.3, the Crew* member will heal 0.3 HP per second to the lowest HP friendly Crew member in the same room.
Crew In Federation Collection (In Order By Picture): Fed Laura, Fed Lisa, Fed Michelle, Fed Bobby, Fed Peter, Fed Tony, Fed Medic, Deadeye Diana, Cross-eyed Mary, 'Saucy' Maguire, Whats-his-name, Handsome Michael, Tom no.3, Serial25 - Bookworm, and Jacob-57a
Resurrection allows Crew* (Cats) to be revived with 1 HP when they are killed. After the Crew* member is revived, they have a 0.5 second delay before they can preform another action. The Crew* member can only be resurrected once. The chance of the Crew* member resurrecting is based on the collection buff. So a Crew* member with a collection buff of 20% has a 20% chance of reviving with 1 HP.
Crew In Cats Collection (In Order By Picture): Meowy Cat, Daft Kittus, Sphinx, Cathulu, Schrodinger, Alley Cat Zombie, and Dr Mew
Sharpshooter allows Crew* to deal double damage when attacking. The chance of the Crew* member dealing double damage is based on the collection buff. For example, Crew with a collection buff at 5% and an attack stat of 4 would have a 5% chance of dealing 8 damage (4 base attack stat x 2). This does not apply in Ground Battles.
Crew In Qtarian Collection (In Order By Picture): Qtarian Bobby, Qtarian Laura, Qtarian Tony, Qtarian Michelle, Qtarian Lisa, Qtarian Edward, Qtarian Medic, Fixer_Silvertongue, Katie-8 'Hammerhead', Sally Smelter, and Vit the Idiot
Sharpshooter allows Crew* to deal double damage when attacking. The chance of the Crew* member dealing double damage is based on the collection buff. For example, Crew with a collection buff at 5% and an attack stat of 4 would have a 5% chance of dealing 8 damage (4 base attack stat x 2). This does not apply in Ground Battles.
Crew In Sango Collection (In Order By Picture): Liu Bei, Guan Yu, Zhang Fei, Dong Zhuo, Cao Cao, Lyu Bu, Zhao Yun, Zhuge Liang, Da Qiao, and Xiao Qiao
Sharpshooter allows Crew* to deal double damage when attacking. The chance of the Crew* member dealing double damage is based on the collection buff. For example, Crew with a collection buff at 5% and an attack stat of 4 would have a 5% chance of dealing 8 damage (4 base attack stat x 2). This does not apply in Ground Battles.
Crew In Space Pirate Collection (In Order By Picture): Pirate Loretta, Pirate Lia, Pirate Michelle, Pirate Alex, Pirate Edward, Pirate Tony, First Mate, Cheng the Red, Bonnie Blacktooth, Mabel Mayhem, Burt the Terrible, Kevin Kruel, Awful Alex, and Dracorpse
Cryo Field allows Crew* to freeze enemy Crew every time they attack them. How long the enemy Crew is frozen is based on the collection buff. For example, a Crew member has a collection buff of 0.2. Every time the Crew* member attacks an enemy Crew member, the enemy crew member will be frozen for 0.2 seconds.
Headshot allows Crew* to instantly kill the Crew they are attacking. The chance of the Crew* member instantly killing the Crew member they are attacking is based on the collection buff. For example, Crew with a collection buff of 3 would have a 3% chance of instantly killing the Crew member they are attacking.