The Zones > Hero Zone
You can use the image to jump to the different selections.
Just click on the number you would like to read something about.
Kill Score: 2500
Select this hero if your team wasn't able to kill the enemy Shield Points yet. You will need to protect it well since the EMP will need a short time to be ready, but after that go for the enemy Nexus. Also Irradiation and Defensive Matrix can be very helpful especially casted on other heroes.
Kill Score: 4800
The Norad II can heavily support a push or a containment and its Yamato Cannon can damage an unshielded Nexus. Don't go without support.
Kill Score: 4100
The Arbiter is always an option to quickly teleport some strong units or even better heroes nearby the enemy Nexus. Pretty helpless alone since Stasis Field will need some time to be ready!

If you select this while there is any other hero selector of the enemy team in the hero zone, it will be killed. Your selector will be gone too, but especially if you can time this hero perfectly and kill like two or even more enemy selectors that's definitly worth it! Oh and...your teams hero selectors will stay alive of course. Use the kill score board on the upper left side of the screen to see when it's possibly time to use this hero.
Kill Score: 1000
Fenix is best used when the enemy Nexus is unshielded. Try to drop it behind, hide it among normal Dragoons or just try to go for it directly - best supported by a Defensive Matrix.
Kill Score: 1600
Tom isn't really dangerous, but can take down air units and heroes what makes it really annoying for your enemies.
Kill Score: 1600
The Queen can be very useful if you want to kill heroes using the Broodlings. If you can't kill a spotted hero, you can still parasite or ensnare it. Ensnare can also be supportive during a containment.
Kill Score: 900
The Defiler is a very nice choice if you want to support a drop with its Dark Swarm. Plague can also be cast on cloaked units and heroes or weaken the enemy Nexus even with full shield. Stay burrowed and think about Dark Swarm for self-defense vs hunting air or ranged units.
Kill Score: 400
Only select this one if the enemy Nexus is unshielded and try to directly hit it. If you are successful, about one third of its Hit Points are gone!
Kill Score: 200
Only recommended for early game. Select Jim if you quickly want to increase your Kill Points. Always have some Medics with you and don't leave him without support!
Kill Score: 500
Only recommended for early game. Select this one if you quickly want to increase your Kill Points. Best have some Medics with you and don't leave it without support!
Kill Score: 4000
Only recommended for early game. Can heavily support a push or containment with Storm and Ensnare. Consume your Zerg units to remain cloaked and keep on using the spells. Watch out for detection and don't leave her without support!
Kill Score: 800
Only recommended for early game, especially if you are the first one getting a hero selector. Position them at the enemy spawn area and support them with Medics.
Kill Score: 700
Only recommended for early game. Regularly use Consume on your Zerg units to remain cloaked and keep on locking units down. Watch out for detection and don't leave it without support!

Before your enemies can attack your nexus Hit Points they first will have to kill all Shield Points. Once this is done it's strongly recommended you or one of your teammates select Shield in the Hero Zone. Once selected three things will happen: First your Nexus Shield Points are fully regenerated. Second all units of you and your teammates are fully healed. And third, the whole map will be revealed for about 35 seconds for you and your teammates. This is giving you the chance to see what your enemies are doing and you will even be able to see their cloaked and burrowed units! However, the player who selected the Shield Hero is unable to select or suicide units for 20 seconds. After that there are still 15 seconds left to kill some hiding heroes.
Kill Score: 1300
Better only select this one if your team is predominant. This will give you the time to hide it untill Mind Control is ready. You can also use it to support a push or a containment.
These Heroes can only be selected when your Kill Score is at least 30.000, because they are too strong for the early game.
Needs at least 30.000 Kill Points!
Kill Score: 2600
Torrasque can heavily support your teams push or containment. Especially with some Medics it will be really hard for your enemies to take it down.
Needs at least 30.000 Kill Points!
Kill Score: 800
Select this one if you want to protect another air hero or just use it to take down the air units. Don't try to attack without support and don't get surrounded. Can also be very powerful during a push or containment.
Needs at least 30.000 Kill Points!
Kill Score: 400
You can use Yggdrasill as a tank for the protection of another hero or just as a very tough mobile detector. Regularly check if got blinded by a Medic!
For these Heroes you need two Selectors, so you can select them soonest when your Kill Score is 100.000. To choose one of these you have to bring both Selectors to the same beacon.
Needs two Selectors!
Kill Score: 300
If you have selected this one, use its endless Spider Mines and mine the whole map - especially the enemy spawn area. Like this you can kinda reveal the map and see what your enemies try to do. They will also often be forced to go for air units what makes it easier for you and your teammates to counter them. The auto mining will stop as long as there are 30 mines on the map. Don't get locked down!
Needs two Selectors!
Kill Score: 1400
Use The Duke to support a strong push or containment and siege nearby the enemy Nexus. You can also drop it behind nearby the Observer suicide. Don't get locked!
Needs two Selectors!
Kill Score: 1300
With its kinda endless Disruption Webs it can heavily support a push or containment at the enemy spawn area. The Webs will be absolutly annoying for your enemies making it very difficult to defend. Can also stay at your own Nexus to cast a Web on incoming drops or hero attacks.
Needs two Selectors!
Kill Score: 800
Only select it when the enemy Nexus is unshielded or at least hide it until its shield are weak. Then go and directly attack. Try to kill all detectors so it can't be attacked by normal units.
Needs two Selectors!
Kill Score: 1400
Tassadar can heavily support a push or containment. With kinda endless Storms it can quickly increase your Kill Points as well as annoy your enemies with mass hallucinations. Best way is to create mass illusions of heroes. Your enemies will have to aim manually at the real units. Some players also try to cast as many illusions as possible at the enemy spawn area so it is blocked and makes it very difficult for them to break free.
There are ten combos in the hero zone. They are only possible to choose when you have two Selectors. To select one of these, you have to put the Selectors on two different 2-Selector Heros. The combos are quite strong and can be very helpful. If you don't want to choose a 2-Selector Hero, go for one of these combos. It may take some time to select them, but it's definitly worth doing it!
Between Magic Raynor and The Duke
If you walk next to the Data Disc in the upper left corner of the Hero-Zone with one Selector, it will show you a list of all available hidden hero combos! You can't accidentally choose something because there are only 2-Selector heroes and your selector won't die of course, it will just be teleported back into the zone!
One Selector on Tassadar +
One Selector on Magic Raynor
Total Kill Score: 14400
By far the most expensive hero combo, but it can be deadly. Three Norad II can be really deadly with some other units aside when pushing forward and as long as they are supported well vs all anti air units. Watch the Lockdown and don't mess with Goliaths!
One Selector on The Duke +
One Selector on Magic Raynor
Total Kill Score: 4500
Deadly one! The two Fenix can be hidden among other Goons or just dropped. If the EMP is ready you can damage the enemy Nexus seriously or even destroy it.
One Selector on The Duke +
One Selector on Zeratul
Total Kill Score: 3300
Another combo for directy attacking the enemy Nexus. The Science Vessel gives you the possiblity to kill the Shields and even Matrix your Infesteds. This combo can end the game in your teams favour.
One Selector on Tassadar +
One Selector on The Duke
Total Kill Score: 1700
Yggdrasill can be used as a tank hiding the Infested inside and taking it near its goal - the enemy Nexus. With the defiler also loaded you can perfectly support a drop with Detection and the Dark Swarm.
One Selector on Tassadar +
One Selector on Zeratul
Total Kill Score: 4050
The Queen is a nice backing in defense and offense. If you use the Arbiter to recall some Tanks or Reaver you will also have a detector in form of Yggdrasill by your side.
One Selector on Zeratul +
One Selector on Magic Raynor
Total Kill Score: 4400
This one is definitly a defensive combo but sometimes very helpful. The Toms will guard your Nexus and remain cloaked while you also have a detector in form of Yggdrasill. The Queen can brood incoming heroes or ensnare air units to slow them down. Alan will clear the sky meanwhile.
One Selector on The Duke +
One Selector on Raszagal
Total Kill Score: 6400
The four Toms can give you air control as long as you watch out for enemy detectors. These powerful anti-air guys can even take down a Hyperion in a very short time.
One Selector on Zeratul +
One Selector on Raszagal
Total Kill Score: 3000
With this one combo you can neither damage the enemy Nexus nor can you increase your Kill Points. And still you can have a lot of fun with it escpecially when your team is clearly superior. The tough Yggdrasill can be used as a tank to hide and protect the two Dark Archons. Like this you can wait until they are ready to use Mind Control and go for enemy heroes. Also nice to support a containment.
One Selector on Raszagal +
One Selector on Magic Raynor
Total Kill Score: 4100
With this combo you might be able to protect your Vessel until its EMP is ready. The awesome air damage will kill incoming air units very quickly and can also be used to support a strong push towards the enemy Nexus.
One Selector on Tassadar +
One Selector on Raszagal
Total Kill Score: 2850
This one also is very interesting. Wherever you move the way better armored Vessel, the Warbringer will immediately be teleported below. Like this you can harass your enemies while you have a very though Vessel with all the abilities of a normal one.