Hello! Ill be adding some more pets in the comment that have been added in-game! Please show some support and let me know if I missed anything, thank you!
Master Majestic Phoenix
This Phoenix is the upgraded version (i). After you get the (i) version just use the Master Orb (shown below) on the pet.
The next picture is what the pet looks like and the perk of the master version.
Master Blood Guardian
This pet is just like the Phoenix need the (i) version first then use master orb. Picture below shows pet and the perks.
Master Golden Hydra
This pet is just like the others listed above, need the (i) version first then use Master Orb. Below is pet and its perks:
You can get the Seren pet when the boss gets spawned. Throughout Warscape you get crystal shards that are used to spawn Seren. You will need to have 100 shards to spawn 1. To spawn you run South-West of home until you see the Seren spawn. You give her 100 shards and click her again and Seren will spawn. After it spawns it will show in Clan Chat "Seren has spawned type ::seren" it is a global boss so everyone who does at least 100 damage will get loot.
This pet can also be imbued to the (i) version with an Imbue Orb (shown below)
The upgraded version is shown below:
This version of Seren is acquired the same way as the pet above but while spawning Seren's theres a random chance that an Enchanted Seren will spawn. This version of the pet is dropped only by the Enchanted Seren spawn. Another way to get this version is an Enchanted Seren Token from the Vote Shop.
You can also imbue this pet to the (i) version with an Imbue Orb. The (i) version is shown below:
Galvek is another group boss that everyone gets loot from as long as you do 100 damage. He spawns every hour or also spawned with a Galvek token. One way to get these tokens is from killing Night Terror. All you have to do is click the token and type ::galvek
Galvek can also be imbued with an Imbued the pet itself looks the same but the perk boost damage from 250% to 300%.
This version of Galvek is obtained by killing the Enchanted Galvek. To spawn this version you need to get a Enchanted Galvek Token which can be obtained throughout Warscape or in the Vote Shop.
This verison can also be imbued by and Imbue Orb. The pet looks the same but the perk goes from 300% damage to 350%
You can obtain this pet from going to Zalcano boss using ::zalc. This is another group boss which means everyone gets loot if you do at least 100 damage.
This pet can also be imbued with an Imbue Orb to its (i) version shown below:
You will need to kill this boss in order to get the pet. Just open the Warscape teleport interface and click the boss tab and find "Abomination". This boss is also a group boss so everyone will get loot.
This pet can also be imbued with an Imbue Orb the perk goes from 250% damage to 275% damage.
This pet is obtained by doing Master Clue scrolls. There's a few ways to get masters. 1 - killing bosses drop randomly 1-3 torn clue parts. Collect all 3 in order to make 1 master clue scroll. 2 - you can make 1 master clue by going to the Clue Scroll NPC West of home but you will need a easy, medium, hard, and elite clue scroll to get one. 3 - Opening elite clue scrolls will give you master clue scrolls randomly. Below is a picture of the pet and its perk:
This pet you need to kill the boss Demonic Genie. This boss is a solo boss and is pretty hard but worth it. You need to get Demonic Lamp's which you can get the lamp drop from - Penance Queen, Zalcano, and Abomination. In order to spawn the Dark Genie you need to teleport to Taverly using the Warscape teleport interface and go to "cities". Once there click the lamp and get ready for a fight. Lamp shown below:
Pet and Perks shown below:
For this pet you will need to kill the group boss "Night Horror", in order to get this spawn someone needs a "Night Horror Key" which you can get from the chest at Night Terror or the hourly spin reward. Once you have a key simply click and the boss will spawn. A chat will go global stating that Night Horror and spawned then you type ::horror to get to him. Be prepared because he puts up a fight. Pet and perks shown below:
This pet you have to be a Legendary Donator to get to the boss to get the drop. OR you can buy from another player. Pet and Perks shown below:
This pet is obtained by doing slayer. You will need to do Bane's slayer tasks and at the end of your task there's a random chance that a Balthazar will spawn. Another way is to buy Slayer Tickets from the Slayer Shop and teleporting to Varrock and activating the ticket. (1 ticket = 1 spawn). Pet and Perks shown below:
This pet can be imbued with a Hellfire Orb that you can get from slayer shop or the slayer chest with Tier 5 Slayer keys (orb shown below):
The (i) version is shown below:
For this version you have to have 10,000 Slayer Points and buy the Slayer Boss Scroll ll. This unlocks Enhanced Balthazar. This version can be spawned the same way as the one mentioned above. But, the pet and perks are different:
This pet can also be imbued by a Hellfire Orb. The (i) version is shown below:
The perfected version of balthazar can be obtained by slayer also but, you will need 25,000 slayer points to buy the Slayer Boss Scroll lll to unlock it. Same as the others it can spawn randomly at the end of task or by slayer tickets. Pet and perks shown below: