Zenless Zone Zero Billy materials and farming locations

Billy is an A-Rank Physical Agent in Zenless Zone Zero. He is an Attack Agent who functions as a Main DPS in all team comps. Wielding dual pistols, Billy brings hellfire to the battlefield with his rapid attacks. He is a member of the Cunning Hares faction along with Nicole, Anby, and Nekomata.

While Billy is one of the initial characters you unlock for free, he remains a great choice in the early to mid-game. As such, promoting him and upgrading his skills can be worthwhile. This article provides all the promotion and skill enhancement materials for Billy in Zenless Zone Zero.

Zenless Zone Zero Billy promotion materials

Promoting Billy to the maximum rank in Zenless Zone Zero requires the following materials:

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Basic Offense Certification Seal x4
Advanced Offense Certification Seal x32
Pioneer's Certification Seal x30
Dennies x800,000

The table below provides the amount of materials you need for each promotion:

Level	Materials	Rewards
20	Basic Offense Certification Seal x4, Dennies x24,000	1x Master Tape
30	Advanced Offense Certification Seal x12, Dennies x56,000	N/A
40	Advanced Offense Certification Seal x20, Dennies x120,000	1x Master Tape
50	Pioneer's Certification Seal x10, Dennies x200,000	N/A
60	Pioneer's Certification Seal x20, Dennies x400,000	1x Master Tape

Also read: Zenless Zone Zero Lycaon materials and farming locations

Zenless Zone Zero Billy skill materials

Billy has five skills and upgrading any one of them to the maximum level requires the materials listed below:

Basic Physical Chips x5
Advanced Physical Chips x15
Specialized Physical Chips x50
Dennies x500,000
Hamster Cage Pass x1

The following table gives an overview of the amount of materials needed for each skill level:

Skill level	Required materials
2	Basic Physical Chips x2, Dennies x2,000
3	Basic Physical Chips x3, Dennies x3,000
4	Advanced Physical Chips x2, Dennies x6,000
5	Advanced Physical Chips x3, Dennies x9,000
6	Advanced Physical Chips x4, Dennies x12,000
7	Advanced Physical Chips x6, Dennies x18,000
8	Specialized Physical Chips x5, Dennies x45,000
9	Specialized Physical Chips x8, Dennies x67,500
10	Specialized Physical Chips x10, Dennies x90,000
11	Specialized Physical Chips x12, Dennies x112,500
12	Specialized Physical Chips x15, Dennies x135,000, Hamster Cage Pass x1

All of Billy's Core skills can be unlocked in ZZZ if you farm the materials given below:

A - Dennies x5,000
B - Ethereal Pursuit x2, Dennies x12,000
C - Ethereal Pursuit x4, Dennies x28,000
D - Ferocious Grip x2, Ethereal Pursuit x9, Dennies x60,000
E - Ferocious Grip x3, Ethereal Pursuit x15, Dennies x100,000
F - Ferocious Grip x4, Ethereal Pursuit x30, Dennies x200,000

Also read: How to get 100 free pulls in Zenless Zone Zero 1.0

Zenless Zone Zero Billy materials farming locations

To farm Billy Kid's materials in ZZZ, you will have to progress a little bit in the game to participate in the various repeatable combat challenges. You can find them in the Training tab of the dailies menu.

Basic/Advanced Offense Seals and Pioneer's Certification Seal

Pioneer's Certification Seal (Image via HoYoverse)

Complete the Attack Drill challenge in the HIA VR Center. This nets you Offense Seals and Pioneer's Certification Seal, with the latter being the rarest one. Increasing the challenge level guarantees more frequent Offense Seal drops of higher rarity.

Basic/Advanced/Specialized Physical Chips

Specialized Physical Chip (Image via HoYoverse)

Physical Chips is the reward you get by completing the Rigidity Test located in the HIA VR center. The higher the level of the Rigidity Test, the rarer the quality of the Shock Chips you obtain

Hamster Cage Pass

The Hamster Cage Pass is a tough item to farm as it is only available during limited-time events. Alternatively, you can progress through the New Eridu City Fund Battle Pass quickly to obtain it.

You can locate the Battle Pass at the screen's top-right corner, annotated by a leaf-like icon. You can also press F3 on your PC to access it.

Higher Dimensional Data: Ethereal Pursuit

Higher Dimensional Data: Ethereal Pursuit is a Core Skill Enhancement you can get by completing the Expert Challenge Notorious - Armored Hati. Teleport to the HIA Club and enter the Champion Arena to fight this boss.

Ferocious Grip

Ferocious Grip is a Core Skill Enhancement material, which is obtained by defeating the Newborn Dead End Butcher. You can fight this boss by fast traveling to the Scott Outpost and entering the Notorious Hunt.

Dennies

Dennies are a common currency used in New Eridu, which allows you to upgrade pretty much all of the important things in the game. While there are several methods to obtain them, you can farm them by going to the Training tab of the Dailies menu and participating in Combat Simulation.

Check out more ZZZ articles:

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Edited by Abu Amjad Khan