Automatically Marquee Code scrolling with recent post title?

As I told you in chat, you just need the recent posts and can add any markup you need:

// functions.php
function recent_inaccessible_posts()
{
    if ( ! $recent = wp_get_recent_posts(array(), OBJECT ) )
        return;

    $out="<marquee><ul>";
    foreach ( $recent as $r )
        $out .= '<li><a href="' . get_permalink($r->ID) . '">' . get_the_title($r->ID) . '</a>';

    print "$out</ul></marquee>";
}

Call it wherever you need it with recent_inaccessible_posts();.

Be aware, scrolling text is almost inaccessible for many users. I would never use it.