Sionis Industries. #4662516
Game fan groupsENDC ComicsBlack MaskRoleplay
Description
Sionis Industries, also known as SIONIS is a business company that was owned and founded by billionaire Roman Sionis, A.K.A Black Mask. Sionis Industries manufactured steel, however Sionis Industries didn't just manufacture steel, within the company was the fierce False-Face Society, more commonly known as Black Mask's Gang. Black Mask's Gang used the Sionis Industries Headquarters, Sionis Steel Mill as their base of operations.
Written by the group; not a statement by this register.
Membership history
Growth
Growth history is still building. We hold one measurement for this entry. A trend needs at least two, taken days apart — so this will fill in on its own rather than being estimated. We do not publish numbers we have not measured.
| Measured (UTC) | Members | Change |
|---|---|---|
| 13 Sept 2026, 07:34 | 1 | first reading |
Ownership
Owned by @illiberalsholderacc as measured.
Groups seen changing owner — the largest ever handed over and the most recent — are on the ownership transfers board.
Members we’ve seen
@illiberalsholderacc — Roman Sionis (rank 255) terminated
A sample — only members this register has independently measured, highest rank first. Not the full roster.
Rank structure
Roles and per-rank member counts as Roblox reports them (rank 0 = guest … 255 = owner).
Related groups
Groups whose measured members overlap with this one — a sample from our membership graph.
Open data
Download this group’s measured record — free to reuse with attribution: membership history (CSV) · full record (JSON)
Each file carries its licence and retrieval time inside it, and is generated from the same measurements shown above.