If you want to run a specific terminal emulator (e.g.
gnome-terminal, etc.), just look for its command-line arguments.
For example, to run console utility
htop in Konsole (KDE's default terminal), type:
konsole -e /bin/sh -c htop
(You may want to add
--hold argument to prevent Konsole closing immediately after process stops.)
To be more detailed: the above command runs
konsole which runs
/bin/sh interpreter inside itself, and the interpreter runs
htop command inside itself.
Arguments of most popular terminal emulators are pretty similar, try these:
xterm -e /bin/sh -c htop
lxterminal -e /bin/sh -c htop
xfce4-terminal -e "/bin/sh -c htop"