'Current' Undertaker was made on several bases. Some of them:
<div class='spoiler_toggle'>Snitsky base - by TSK</div><div class="spoiler" style="display:none;">
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<div class='spoiler_toggle'>Edge base - by Hasa</div><div class="spoiler" style="display:none;">
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<div class='spoiler_toggle'>Heidenreich base - by baal</div><div class="spoiler" style="display:none;">
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My favorite is Heidenreich base