Black Chore OUR TEAM

3D HoloGroup - 3DHG Greg

Greg Partin – Co-Founder and CEO

Greg has over 20 years of experience in the field of software development of enterprise systems and has held numerous leadership positions in several diverse technology companies including Fortune 500.  Greg holds a Bachelor’s degree in Computer Science from Bowling Green State University and a Master’s degree in Computer Information Systems from Nova Southeastern University. Greg has developed several Augmented Reality applications including “Best in Category”. His vision is to help bring Augmented Reality to the world for everyday use.


Tom Sablyar – Co-Founder and CTO

Tom joined 3D HoloGroup with a vision that augmented reality can become a reality for all.  Tom brings over 20 years of experience in the technology, banking, law, retail, finance, and product manufacturing industries.  Prior to joining Tom was a consultant for several Fortune 100 firms that were devoted to technology and telecom.  Tom has owned several companies and founded several startups including Linisi and media conglomerate New Media Group.  Tom also is president and vice-president of several non-profits and has the pleasure of serving as board member of two others companies.


Mario L. Castellanos – Co-Founder and COO

Mario has over thirty five years of corporate environment and start-up experience in several technology and non-tech sectors including AI, Gamification Technology, Broadcasting and Media, Telecommunications, Security Systems, Energy, Sports, Employee Empowerment, and others. Prior to 3D HoloGroup, Mario was President and owner of New Ventures Technologies, a business services and business processes hands-on consulting company specializing in change management, business analysis, training, operations, sales, marketing and business development. In addition, Mario is an advisor for three investment and advisory investment firms and Board Advisor for two others.










Ronald T. Linares – Financial Board Member

Experienced Chief Financial Officer with a demonstrated history of working in the
SaaS software, life sciences, restaurant and residential contracting industries. Strong finance professional skilled in Strategic Planning, Management Consulting, Financial Analysis, Financial Reporting, Business Strategy, Start-ups, and Mergers & Acquisitions, budgeting and forecasting, forecasting and Project Management.

Dr. Rafael Grossmann

Rafael J. Grossmann, MD, FACS – Senior Advisor, Medical Technology

Healthcare Futurist, Technology Innovator, Surgeon and Educator. A practicing surgeon in Maine, USA, specializing in General, Trauma, Advanced Laparoscopic, Single Incision and Robotic Assisted Surgery, Dr. Grossmann is also a highly respected and sought after technologist. An expert in the use of Virtual, Augmented and Mixed Reality, in 2013, he became the first doctor to use Google Glass during live surgery. He views these advances as improving healthcare resulting in more efficient, more intuitive, less expensive and ultimately better patient care and medical education. As an Exponential Medicine/ Singularity University alumnus and faculty, he is passionate about the intersection of Innovation Technology and Healthcare. He’s consulted several entities including Magic Leap, Animares, Nanox Vision and many start-ups in the technology landscape. He’s lectured at MIT Media Lab, Stanford, Google, Deloitte, and many other health industry players. Rafael has also been a TEDx speaker, a national and global Keynote Speaker and has been interviewed by numerous media outlets including CBS, Univision, CNN, and others. His subject matter articles have been published by The New York Times, The Boston Globe, The Washington Post, PCMag, and many more.

Click here to check out his Imagine the Possibilities Video


Jay W. Pettegrew, M.D. – Senior Advisor, Medical Science Technology

Dr. Pettegrew’s highly distinguished and internationally recognized career as a scientist, M.D. tenured Professor, US  Navy Lieutenant commander (LCDR, MC, USNR), and patented inventor spans more than 45 years. His expertise includes neurochemistry/neurophysics and the development and application of magnetic resonance spectroscopic imaging (MRSI) and magnetic resonance imaging (MRI) in neuropsychiatric disorders. His experience further includes the application of in vitro and in vivo MRSI/MRI methods to normal brain development and aging, Alzheimer’s disease, alcoholism, autism, major depressive disorders, and schizophrenia. He is a member of sixteen national and international scientific societies including being elected a Fellow of the American Academy of Neurology (1987), The American Psychopathological Association, Inc., and the Royal Society of Medicine (England) and has over 300 publications in peer-reviewed scientific journals related to his research. He has been a reviewer for seventeen international scientific journals and has been invited to give over 100 national and international lectures. He has been a recipient of continuous NIH research funding since 1989 and has been an extra-mural NIH grant reviewer since 1984.

Dave Outlaw photo










Dave Outlaw – Senior Advisor, Manufacturing and Education

Dave has a long history of working with manufacturing and engineering companies in management, training, and consulting positions. Approaching his work with an emphasis on humility, teamwork, and collaboration, he has transformed his company, Outlaw Solutions and Concepts, from a part-time endeavor to a full service dedicated to supporting small business manufacturing. Outlaw aids companies in this sector through the implementation of inexpensive digital technologies that provide entrepreneurs a way to produce working models with which they can test their designs. This aid helps to boost manufacturing by making innovation a much more streamlined and efficient process. Outlaw uses his experience in business management to not only teach others, but also to determine the most effective strategies that can be used to enhance company performance. Dave’s formal education includes a BA in Architecture from The University of Texas at Austin, and a M.S. from Florida Institute of Technology.